408674785 has 16 divisors (see below), whose sum is σ = 504642960. Its totient is φ = 317574400.

The previous prime is 408674723. The next prime is 408674789. The reversal of 408674785 is 587476804.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 38651089 + 370023696 = 6217^2 + 19236^2 .

It is not a de Polignac number, because 408674785 - 2²⁵ = 375120353 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (408674789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19131 + ... + 34399.

It is an arithmetic number, because the mean of its divisors is an integer number (31540185).

Almost surely, 2^408674785 is an apocalyptic number.

It is an amenable number.

408674785 is a deficient number, since it is larger than the sum of its proper divisors (95968175).

408674785 is a wasteful number, since it uses less digits than its factorization.

408674785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15428.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The square root of 408674785 is about 20215.7063937919. The cubic root of 408674785 is about 742.0946163519.

The spelling of 408674785 in words is "four hundred eight million, six hundred seventy-four thousand, seven hundred eighty-five".