390779852 has 6 divisors (see below), whose sum is σ = 683864748. Its totient is φ = 195389924.

The previous prime is 390779849. The next prime is 390779861. The reversal of 390779852 is 258977093.

It is a happy number.

It is a super-3 number, since 3×390779852³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 390779852.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48847478 + ... + 48847485.

It is an arithmetic number, because the mean of its divisors is an integer number (113977458).

Almost surely, 2^390779852 is an apocalyptic number.

It is an amenable number.

390779852 is a deficient number, since it is larger than the sum of its proper divisors (293084896).

390779852 is a wasteful number, since it uses less digits than its factorization.

390779852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97694967 (or 97694965 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 50.

The square root of 390779852 is about 19768.1524680482. The cubic root of 390779852 is about 731.1010169908.

The spelling of 390779852 in words is "three hundred ninety million, seven hundred seventy-nine thousand, eight hundred fifty-two".