390380685 has 8 divisors (see below), whose sum is σ = 624609120. Its totient is φ = 208203024.

The previous prime is 390380647. The next prime is 390380693. The reversal of 390380685 is 586083093.

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

It is not a de Polignac number, because 390380685 - 2⁶ = 390380621 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13012675 + ... + 13012704.

It is an arithmetic number, because the mean of its divisors is an integer number (78076140).

Almost surely, 2^390380685 is an apocalyptic number.

It is an amenable number.

390380685 is a deficient number, since it is larger than the sum of its proper divisors (234228435).

390380685 is a wasteful number, since it uses less digits than its factorization.

390380685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26025387.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 390380685 is about 19758.0536743881. The cubic root of 390380685 is about 730.8520014052.

The spelling of 390380685 in words is "three hundred ninety million, three hundred eighty thousand, six hundred eighty-five".