3996831409 has 2 divisors, whose sum is σ = 3996831410. Its totient is φ = 3996831408.

The previous prime is 3996831407. The next prime is 3996831479. The reversal of 3996831409 is 9041386993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3490446400 + 506385009 = 59080^2 + 22503^2 .

It is an emirp because it is prime and its reverse (9041386993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3996831409 - 2¹ = 3996831407 is a prime.

It is a super-2 number, since 2×3996831409² = 31949322623937850562, which contains 22 as substring.

Together with 3996831407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3996831401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998415704 + 1998415705.

It is an arithmetic number, because the mean of its divisors is an integer number (1998415705).

Almost surely, 2^3996831409 is an apocalyptic number.

It is an amenable number.

3996831409 is a deficient number, since it is larger than the sum of its proper divisors (1).

3996831409 is an equidigital number, since it uses as much as digits as its factorization.

3996831409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 52.

The square root of 3996831409 is about 63220.4983292603. The cubic root of 3996831409 is about 1586.9817891855.

The spelling of 3996831409 in words is "three billion, nine hundred ninety-six million, eight hundred thirty-one thousand, four hundred nine".