3469781 has 8 divisors (see below), whose sum is σ = 3991104. Its totient is φ = 2954880.

The previous prime is 3469777. The next prime is 3469783. The reversal of 3469781 is 1879643.

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 3469781 - 2² = 3469777 is a prime.

It is a super-2 number, since 2×3469781² = 24078760375922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3469783) 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, 380 + ... + 2661.

It is an arithmetic number, because the mean of its divisors is an integer number (498888).

Almost surely, 2^3469781 is an apocalyptic number.

It is an amenable number.

3469781 is a deficient number, since it is larger than the sum of its proper divisors (521323).

3469781 is a wasteful number, since it uses less digits than its factorization.

3469781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211.

The product of its digits is 36288, while the sum is 38.

The square root of 3469781 is about 1862.7348174123. The cubic root of 3469781 is about 151.3912197879.

The spelling of 3469781 in words is "three million, four hundred sixty-nine thousand, seven hundred eighty-one".