405023855 has 16 divisors (see below), whose sum is σ = 512161920. Its totient is φ = 306633888.

The previous prime is 405023833. The next prime is 405023909. The reversal of 405023855 is 558320504.

It is a cyclic number.

It is not a de Polignac number, because 405023855 - 2¹² = 405019759 is a prime.

It is a super-2 number, since 2×405023855² = 328088646238122050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120224 + ... + 123546.

It is an arithmetic number, because the mean of its divisors is an integer number (32010120).

Almost surely, 2^405023855 is an apocalyptic number.

405023855 is a deficient number, since it is larger than the sum of its proper divisors (107138065).

405023855 is a wasteful number, since it uses less digits than its factorization.

405023855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4630.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 405023855 is about 20125.2044710110. The cubic root of 405023855 is about 739.8781483075.

The spelling of 405023855 in words is "four hundred five million, twenty-three thousand, eight hundred fifty-five".