390639083 has 4 divisors (see below), whose sum is σ = 390693120. Its totient is φ = 390585048.

The previous prime is 390639037. The next prime is 390639101. The reversal of 390639083 is 380936093.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 390639083 - 2⁸ = 390638827 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 390639083.

It is not an unprimeable number, because it can be changed into a prime (390639023) 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 3 ways as a sum of consecutive naturals, for example, 14123 + ... + 31316.

It is an arithmetic number, because the mean of its divisors is an integer number (97673280).

Almost surely, 2^390639083 is an apocalyptic number.

390639083 is a deficient number, since it is larger than the sum of its proper divisors (54037).

390639083 is an equidigital number, since it uses as much as digits as its factorization.

390639083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54036.

The product of its (nonzero) digits is 104976, while the sum is 41.

The square root of 390639083 is about 19764.5916476916. The cubic root of 390639083 is about 731.0132192886.

The spelling of 390639083 in words is "three hundred ninety million, six hundred thirty-nine thousand, eighty-three".