390297 has 4 divisors (see below), whose sum is σ = 520400. Its totient is φ = 260196.

The previous prime is 390289. The next prime is 390307. The reversal of 390297 is 792093.

390297 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.

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: 792093 = 3 ⋅264031.

It is not a de Polignac number, because 390297 - 2³ = 390289 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

390297 is a modest number, since divided by 297 gives 39 as remainder.

It is not an unprimeable number, because it can be changed into a prime (390097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65047 + ... + 65052.

It is an arithmetic number, because the mean of its divisors is an integer number (130100).

2³⁹⁰²⁹⁷ is an apocalyptic number.

It is an amenable number.

390297 is a deficient number, since it is larger than the sum of its proper divisors (130103).

390297 is a wasteful number, since it uses less digits than its factorization.

390297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130102.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 390297 is about 624.7375448939. The cubic root of 390297 is about 73.0799773992.

The spelling of 390297 in words is "three hundred ninety thousand, two hundred ninety-seven".