390725722 has 8 divisors (see below), whose sum is σ = 620564436. Its totient is φ = 183870912.

The previous prime is 390725719. The next prime is 390725749. The reversal of 390725722 is 227527093.

It can be written as a sum of positive squares in 2 ways, for example, as 301404321 + 89321401 = 17361^2 + 9451^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5745933 + ... + 5746000.

Almost surely, 2^390725722 is an apocalyptic number.

390725722 is a deficient number, since it is larger than the sum of its proper divisors (229838714).

390725722 is a wasteful number, since it uses less digits than its factorization.

390725722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11491952.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 390725722 is about 19766.7832992624. The cubic root of 390725722 is about 731.0672585756.

The spelling of 390725722 in words is "three hundred ninety million, seven hundred twenty-five thousand, seven hundred twenty-two".