406932640947 has 24 divisors (see below), whose sum is σ = 680964044384. Its totient is φ = 229347552384.

The previous prime is 406932640913. The next prime is 406932640963. The reversal of 406932640947 is 749046239604.

406932640947 is a `hidden beast` number, since 406 + 93 + 2 + 64 + 0 + 94 + 7 = 666.

It is not a de Polignac number, because 406932640947 - 2⁸ = 406932640691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 406932640893 and 406932640902.

It is not an unprimeable number, because it can be changed into a prime (406932640987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44236828 + ... + 44246025.

Almost surely, 2^406932640947 is an apocalyptic number.

406932640947 is a deficient number, since it is larger than the sum of its proper divisors (274031403437).

406932640947 is a wasteful number, since it uses less digits than its factorization.

406932640947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88482939 (or 88482936 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 54.

The spelling of 406932640947 in words is "four hundred six billion, nine hundred thirty-two million, six hundred forty thousand, nine hundred forty-seven".