405538674 has 8 divisors (see below), whose sum is σ = 811077360. Its totient is φ = 135179556.

The previous prime is 405538673. The next prime is 405538699. The reversal of 405538674 is 476835504.

It is a sphenic number, since it is the product of 3 distinct primes.

405538674 is an admirable number.

It is a super-2 number, since 2×405538674² = 328923232219356552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (405538673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33794884 + ... + 33794895.

It is an arithmetic number, because the mean of its divisors is an integer number (101384670).

Almost surely, 2^405538674 is an apocalyptic number.

405538674 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

405538674 is a wasteful number, since it uses less digits than its factorization.

405538674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67589784.

The product of its (nonzero) digits is 403200, while the sum is 42.

The square root of 405538674 is about 20137.9908133855. The cubic root of 405538674 is about 740.1914977979.

The spelling of 405538674 in words is "four hundred five million, five hundred thirty-eight thousand, six hundred seventy-four".