390390622 has 4 divisors (see below), whose sum is σ = 585585936. Its totient is φ = 195195310.

The previous prime is 390390619. The next prime is 390390647. The reversal of 390390622 is 226093093.

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

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, 97597654 + ... + 97597657.

It is an arithmetic number, because the mean of its divisors is an integer number (146396484).

Almost surely, 2^390390622 is an apocalyptic number.

390390622 is a deficient number, since it is larger than the sum of its proper divisors (195195314).

390390622 is a wasteful number, since it uses less digits than its factorization.

390390622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195195313.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 390390622 is about 19758.3051398646. The cubic root of 390390622 is about 730.8582025443.

The spelling of 390390622 in words is "three hundred ninety million, three hundred ninety thousand, six hundred twenty-two".