390901 has 4 divisors (see below), whose sum is σ = 446752. Its totient is φ = 335052.

The previous prime is 390893. The next prime is 390953. The reversal of 390901 is 109093.

390901 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 109093 = 127 ⋅859.

It is a cyclic number.

It is not a de Polignac number, because 390901 - 2³ = 390893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390961) 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, 27915 + ... + 27928.

It is an arithmetic number, because the mean of its divisors is an integer number (111688).

2³⁹⁰⁹⁰¹ is an apocalyptic number.

It is an amenable number.

390901 is a deficient number, since it is larger than the sum of its proper divisors (55851).

390901 is an equidigital number, since it uses as much as digits as its factorization.

390901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55850.

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 390901 is about 625.2207610117. The cubic root of 390901 is about 73.1176560185.

Adding to 390901 its reverse (109093), we get a palindrome (499994).

The spelling of 390901 in words is "three hundred ninety thousand, nine hundred one".