390699 has 6 divisors (see below), whose sum is σ = 564356. Its totient is φ = 260460.

The previous prime is 390673. The next prime is 390703. The reversal of 390699 is 996093.

It is not a de Polignac number, because 390699 - 2¹¹ = 388651 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 390699.

It is not an unprimeable number, because it can be changed into a prime (390199) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21697 + ... + 21714.

2³⁹⁰⁶⁹⁹ is an apocalyptic number.

390699 is a deficient number, since it is larger than the sum of its proper divisors (173657).

390699 is a wasteful number, since it uses less digits than its factorization.

390699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43417 (or 43414 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 390699 is about 625.0591971966. The cubic root of 390699 is about 73.1050592132.

It can be divided in two parts, 3906 and 99, that added together give a triangular number (4005 = T₈₉).

The spelling of 390699 in words is "three hundred ninety thousand, six hundred ninety-nine".