390240692 has 6 divisors (see below), whose sum is σ = 682921218. Its totient is φ = 195120344.

The previous prime is 390240673. The next prime is 390240727. The reversal of 390240692 is 296042093.

It can be written as a sum of positive squares in only one way, i.e., 381264676 + 8976016 = 19526^2 + 2996^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48780083 + ... + 48780090.

It is an arithmetic number, because the mean of its divisors is an integer number (113820203).

Almost surely, 2^390240692 is an apocalyptic number.

It is an amenable number.

390240692 is a deficient number, since it is larger than the sum of its proper divisors (292680526).

390240692 is a wasteful number, since it uses less digits than its factorization.

390240692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97560177 (or 97560175 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 390240692 is about 19754.5106747801. The cubic root of 390240692 is about 730.7646282327.

The spelling of 390240692 in words is "three hundred ninety million, two hundred forty thousand, six hundred ninety-two".