390446452 has 12 divisors (see below), whose sum is σ = 745397856. Its totient is φ = 177475640.

The previous prime is 390446449. The next prime is 390446473. The reversal of 390446452 is 254644093.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4436848 + ... + 4436935.

It is an arithmetic number, because the mean of its divisors is an integer number (62116488).

Almost surely, 2^390446452 is an apocalyptic number.

It is an amenable number.

390446452 is a deficient number, since it is larger than the sum of its proper divisors (354951404).

390446452 is a wasteful number, since it uses less digits than its factorization.

390446452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8873798 (or 8873796 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 390446452 is about 19759.7179129663. The cubic root of 390446452 is about 730.8930410421.

The spelling of 390446452 in words is "three hundred ninety million, four hundred forty-six thousand, four hundred fifty-two".