390706164 has 36 divisors (see below), whose sum is σ = 993152160. Its totient is φ = 129505680.

The previous prime is 390706163. The next prime is 390706193. The reversal of 390706164 is 461607093.

390706164 is a `hidden beast` number, since 39 + 0 + 7 + 0 + 616 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390706163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23872 + ... + 36759.

It is an arithmetic number, because the mean of its divisors is an integer number (27587560).

Almost surely, 2^390706164 is an apocalyptic number.

It is an amenable number.

390706164 is an abundant number, since it is smaller than the sum of its proper divisors (602445996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390706164 is a wasteful number, since it uses less digits than its factorization.

390706164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60820 (or 60815 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 390706164 is about 19766.2885742367. The cubic root of 390706164 is about 731.0550603752.

The spelling of 390706164 in words is "three hundred ninety million, seven hundred six thousand, one hundred sixty-four".