390020835 has 8 divisors (see below), whose sum is σ = 624033360. Its totient is φ = 208011104.

The previous prime is 390020819. The next prime is 390020837. The reversal of 390020835 is 538020093.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 390020835 - 2⁴ = 390020819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390020837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13000680 + ... + 13000709.

It is an arithmetic number, because the mean of its divisors is an integer number (78004170).

Almost surely, 2^390020835 is an apocalyptic number.

390020835 is a deficient number, since it is larger than the sum of its proper divisors (234012525).

390020835 is a wasteful number, since it uses less digits than its factorization.

390020835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26001397.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 390020835 is about 19748.9451617042. The cubic root of 390020835 is about 730.6273677303.

The spelling of 390020835 in words is "three hundred ninety million, twenty thousand, eight hundred thirty-five".