390243274 has 4 divisors (see below), whose sum is σ = 585364914. Its totient is φ = 195121636.

The previous prime is 390243257. The next prime is 390243379. The reversal of 390243274 is 472342093.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 314814049 + 75429225 = 17743^2 + 8685^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97560817 + ... + 97560820.

Almost surely, 2^390243274 is an apocalyptic number.

390243274 is a deficient number, since it is larger than the sum of its proper divisors (195121640).

390243274 is a wasteful number, since it uses less digits than its factorization.

390243274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195121639.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 390243274 is about 19754.5760268349. The cubic root of 390243274 is about 730.7662399133.

The spelling of 390243274 in words is "three hundred ninety million, two hundred forty-three thousand, two hundred seventy-four".