390220443 has 16 divisors (see below), whose sum is σ = 578672640. Its totient is φ = 259891272.

The previous prime is 390220429. The next prime is 390220459. The reversal of 390220443 is 344022093.

It is a happy number.

It is not a de Polignac number, because 390220443 - 2⁶ = 390220379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (390220403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23230 + ... + 36332.

It is an arithmetic number, because the mean of its divisors is an integer number (36167040).

Almost surely, 2^390220443 is an apocalyptic number.

390220443 is a deficient number, since it is larger than the sum of its proper divisors (188452197).

390220443 is a wasteful number, since it uses less digits than its factorization.

390220443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14215 (or 14209 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 390220443 is about 19753.9981522729. The cubic root of 390220443 is about 730.7519885898.

The spelling of 390220443 in words is "three hundred ninety million, two hundred twenty thousand, four hundred forty-three".