408993932109 has 24 divisors (see below), whose sum is σ = 651502753248. Its totient is φ = 227394306720.

The previous prime is 408993932093. The next prime is 408993932117. The reversal of 408993932109 is 901239399804.

It is not a de Polignac number, because 408993932109 - 2⁴ = 408993932093 is a prime.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408993932159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37592827 + ... + 37603704.

It is an arithmetic number, because the mean of its divisors is an integer number (27145948052).

Almost surely, 2^408993932109 is an apocalyptic number.

408993932109 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

408993932109 is a deficient number, since it is larger than the sum of its proper divisors (242508821139).

408993932109 is a wasteful number, since it uses less digits than its factorization.

408993932109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75196585 (or 75196578 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 57.

The spelling of 408993932109 in words is "four hundred eight billion, nine hundred ninety-three million, nine hundred thirty-two thousand, one hundred nine".