405040956 has 24 divisors (see below), whose sum is σ = 945772800. Its totient is φ = 134916912.

The previous prime is 405040949. The next prime is 405040967. The reversal of 405040956 is 659040504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6495 + ... + 29193.

It is an arithmetic number, because the mean of its divisors is an integer number (39407200).

Almost surely, 2^405040956 is an apocalyptic number.

It is an amenable number.

405040956 is an abundant number, since it is smaller than the sum of its proper divisors (540731844).

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

405040956 is a wasteful number, since it uses less digits than its factorization.

405040956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24193 (or 24191 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 405040956 is about 20125.6293317749. The cubic root of 405040956 is about 739.8885612565. Note that the first 3 decimals are identical.

The spelling of 405040956 in words is "four hundred five million, forty thousand, nine hundred fifty-six".