390253 has 4 divisors (see below), whose sum is σ = 403740. Its totient is φ = 376768.

The previous prime is 390223. The next prime is 390263. The reversal of 390253 is 352093.

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

It can be written as a sum of positive squares in 2 ways, for example, as 334084 + 56169 = 578^2 + 237^2 .

It is not a de Polignac number, because 390253 - 2¹³ = 382061 is a prime.

It is an Ulam number.

It is a Duffinian number.

390253 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390223) 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, 6700 + ... + 6757.

It is an arithmetic number, because the mean of its divisors is an integer number (100935).

2³⁹⁰²⁵³ is an apocalyptic number.

It is an amenable number.

390253 is a deficient number, since it is larger than the sum of its proper divisors (13487).

390253 is a wasteful number, since it uses less digits than its factorization.

390253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13486.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 390253 is about 624.7023291136. The cubic root of 390253 is about 73.0772310805.

The spelling of 390253 in words is "three hundred ninety thousand, two hundred fifty-three".