390938 has 4 divisors (see below), whose sum is σ = 586410. Its totient is φ = 195468.

The previous prime is 390893. The next prime is 390953. The reversal of 390938 is 839093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 839093 = 251 ⋅3343.

It can be written as a sum of positive squares in only one way, i.e., 388129 + 2809 = 623^2 + 53^2 .

It is a plaindrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97733 + ... + 97736.

2³⁹⁰⁹³⁸ is an apocalyptic number.

390938 is a deficient number, since it is larger than the sum of its proper divisors (195472).

390938 is a wasteful number, since it uses less digits than its factorization.

390938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195471.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 390938 is about 625.2503498600. The cubic root of 390938 is about 73.1199628839.

The spelling of 390938 in words is "three hundred ninety thousand, nine hundred thirty-eight".