390907 has 4 divisors (see below), whose sum is σ = 426456. Its totient is φ = 355360.

The previous prime is 390893. The next prime is 390953. The reversal of 390907 is 709093.

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 390907 - 2¹¹ = 388859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17758 + ... + 17779.

It is an arithmetic number, because the mean of its divisors is an integer number (106614).

2³⁹⁰⁹⁰⁷ is an apocalyptic number.

390907 is a deficient number, since it is larger than the sum of its proper divisors (35549).

390907 is a wasteful number, since it uses less digits than its factorization.

390907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35548.

The product of its (nonzero) digits is 1701, while the sum is 28.

The square root of 390907 is about 625.2255592984. The cubic root of 390907 is about 73.1180301147.

The spelling of 390907 in words is "three hundred ninety thousand, nine hundred seven".