405046047 has 32 divisors (see below), whose sum is σ = 663552000. Its totient is φ = 214597728.

The previous prime is 405046013. The next prime is 405046069. The reversal of 405046047 is 740640504.

It is not a de Polignac number, because 405046047 - 2²² = 400851743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405046007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7954 + ... + 29552.

It is an arithmetic number, because the mean of its divisors is an integer number (20736000).

Almost surely, 2^405046047 is an apocalyptic number.

405046047 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

405046047 is a deficient number, since it is larger than the sum of its proper divisors (258505953).

405046047 is a wasteful number, since it uses less digits than its factorization.

405046047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21675.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 405046047 is about 20125.7558118944. The cubic root of 405046047 is about 739.8916611544.

The spelling of 405046047 in words is "four hundred five million, forty-six thousand, forty-seven".