403964650845 has 32 divisors (see below), whose sum is σ = 820753578240. Its totient is φ = 184669554240.

The previous prime is 403964650811. The next prime is 403964650867. The reversal of 403964650845 is 548056469304.

403964650845 is a `hidden beast` number, since 4 + 0 + 3 + 96 + 4 + 6 + 508 + 45 = 666.

It is not a de Polignac number, because 403964650845 - 2⁶ = 403964650781 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 403964650791 and 403964650800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213736966 + ... + 213738855.

It is an arithmetic number, because the mean of its divisors is an integer number (25648549320).

Almost surely, 2^403964650845 is an apocalyptic number.

403964650845 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

403964650845 is an abundant number, since it is smaller than the sum of its proper divisors (416788927395).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

403964650845 is a wasteful number, since it uses less digits than its factorization.

403964650845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427475842 (or 427475836 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 54.

The spelling of 403964650845 in words is "four hundred three billion, nine hundred sixty-four million, six hundred fifty thousand, eight hundred forty-five".