412009861 has 8 divisors (see below), whose sum is σ = 423511704. Its totient is φ = 400577280.

The previous prime is 412009859. The next prime is 412009963. The reversal of 412009861 is 168900214.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 157000900 + 255008961 = 12530^2 + 15969^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 412009861 - 2¹ = 412009859 is a prime.

It is a super-2 number, since 2×412009861² = 339504251122478642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (412009811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5136 + ... + 29161.

It is an arithmetic number, because the mean of its divisors is an integer number (52938963).

Almost surely, 2^412009861 is an apocalyptic number.

412009861 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

412009861 is a deficient number, since it is larger than the sum of its proper divisors (11501843).

412009861 is a wasteful number, since it uses less digits than its factorization.

412009861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34631.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 412009861 is about 20298.0260370313. The cubic root of 412009861 is about 744.1078225868.

The spelling of 412009861 in words is "four hundred twelve million, nine thousand, eight hundred sixty-one".