405879324 has 12 divisors (see below), whose sum is σ = 947051784. Its totient is φ = 135293104.

The previous prime is 405879293. The next prime is 405879337. The reversal of 405879324 is 423978504.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16911627 + ... + 16911650.

It is an arithmetic number, because the mean of its divisors is an integer number (78920982).

Almost surely, 2^405879324 is an apocalyptic number.

It is an amenable number.

405879324 is an abundant number, since it is smaller than the sum of its proper divisors (541172460).

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

405879324 is a wasteful number, since it uses less digits than its factorization.

405879324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33823284 (or 33823282 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 405879324 is about 20146.4469323998. The cubic root of 405879324 is about 740.3986919016.

The spelling of 405879324 in words is "four hundred five million, eight hundred seventy-nine thousand, three hundred twenty-four".