405791253 has 12 divisors (see below), whose sum is σ = 669877728. Its totient is φ = 231880680.

The previous prime is 405791237. The next prime is 405791261. The reversal of 405791253 is 352197504.

It is not a de Polignac number, because 405791253 - 2⁴ = 405791237 is a prime.

It is a super-2 number, since 2×405791253² = 329333082022620018, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405791213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3220503 + ... + 3220628.

It is an arithmetic number, because the mean of its divisors is an integer number (55823144).

Almost surely, 2^405791253 is an apocalyptic number.

It is an amenable number.

405791253 is a deficient number, since it is larger than the sum of its proper divisors (264086475).

405791253 is a wasteful number, since it uses less digits than its factorization.

405791253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6441144 (or 6441141 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 405791253 is about 20144.2610437812. The cubic root of 405791253 is about 740.3451354492.

The spelling of 405791253 in words is "four hundred five million, seven hundred ninety-one thousand, two hundred fifty-three".