390722 has 8 divisors (see below), whose sum is σ = 588816. Its totient is φ = 194452.

The previous prime is 390721. The next prime is 390727. The reversal of 390722 is 227093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (390721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413 + ... + 975.

It is an arithmetic number, because the mean of its divisors is an integer number (73602).

2³⁹⁰⁷²² is an apocalyptic number.

390722 is a deficient number, since it is larger than the sum of its proper divisors (198094).

390722 is a wasteful number, since it uses less digits than its factorization.

390722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 390722 is about 625.0775951832. The cubic root of 390722 is about 73.1064937219.

The spelling of 390722 in words is "three hundred ninety thousand, seven hundred twenty-two".