390220399 has 8 divisors (see below), whose sum is σ = 402174080. Its totient is φ = 378397656.

The previous prime is 390220387. The next prime is 390220403. The reversal of 390220399 is 993022093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 390220399 - 2¹¹ = 390218351 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 (390220339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26667 + ... + 38620.

It is an arithmetic number, because the mean of its divisors is an integer number (50271760).

Almost surely, 2^390220399 is an apocalyptic number.

390220399 is a deficient number, since it is larger than the sum of its proper divisors (11953681).

390220399 is a wasteful number, since it uses less digits than its factorization.

390220399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65469.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 390220399 is about 19753.9970385742. The cubic root of 390220399 is about 730.7519611241.

The spelling of 390220399 in words is "three hundred ninety million, two hundred twenty thousand, three hundred ninety-nine".