390874772 has 6 divisors (see below), whose sum is σ = 684030858. Its totient is φ = 195437384.

The previous prime is 390874703. The next prime is 390874801. The reversal of 390874772 is 277478093.

It can be written as a sum of positive squares in only one way, i.e., 356605456 + 34269316 = 18884^2 + 5854^2 .

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 as a sum of consecutive naturals, namely, 48859343 + ... + 48859350.

It is an arithmetic number, because the mean of its divisors is an integer number (114005143).

Almost surely, 2^390874772 is an apocalyptic number.

It is an amenable number.

390874772 is a deficient number, since it is larger than the sum of its proper divisors (293156086).

390874772 is a wasteful number, since it uses less digits than its factorization.

390874772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97718697 (or 97718695 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 47.

The square root of 390874772 is about 19770.5531536171. The cubic root of 390874772 is about 731.1602067453.

The spelling of 390874772 in words is "three hundred ninety million, eight hundred seventy-four thousand, seven hundred seventy-two".