393670372 has 12 divisors (see below), whose sum is σ = 689065020. Its totient is φ = 196794656.

The previous prime is 393670339. The next prime is 393670423. The reversal of 393670372 is 273076393.

It can be written as a sum of positive squares in 2 ways, for example, as 98724096 + 294946276 = 9936^2 + 17174^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26178 + ... + 38374.

It is an arithmetic number, because the mean of its divisors is an integer number (57422085).

Almost surely, 2^393670372 is an apocalyptic number.

It is an amenable number.

393670372 is a deficient number, since it is larger than the sum of its proper divisors (295394648).

393670372 is a wasteful number, since it uses less digits than its factorization.

393670372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20270 (or 20268 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 40.

The square root of 393670372 is about 19841.1282945300. The cubic root of 393670372 is about 732.8991930815.

The spelling of 393670372 in words is "three hundred ninety-three million, six hundred seventy thousand, three hundred seventy-two".