390421324 has 24 divisors (see below), whose sum is σ = 688353120. Its totient is φ = 193755264.

The previous prime is 390421319. The next prime is 390421327. The reversal of 390421324 is 423124093.

It is a junction number, because it is equal to n+sod(n) for n = 390421292 and 390421301.

It is not an unprimeable number, because it can be changed into a prime (390421327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473977 + ... + 474799.

It is an arithmetic number, because the mean of its divisors is an integer number (28681380).

Almost surely, 2^390421324 is an apocalyptic number.

It is an amenable number.

390421324 is a deficient number, since it is larger than the sum of its proper divisors (297931796).

390421324 is a wasteful number, since it uses less digits than its factorization.

390421324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569 (or 1567 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 390421324 is about 19759.0820636992. The cubic root of 390421324 is about 730.8773613210.

The spelling of 390421324 in words is "three hundred ninety million, four hundred twenty-one thousand, three hundred twenty-four".