390230755 has 4 divisors (see below), whose sum is σ = 468276912. Its totient is φ = 312184600.

The previous prime is 390230747. The next prime is 390230761. The reversal of 390230755 is 557032093.

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

It is not a de Polignac number, because 390230755 - 2³ = 390230747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 390230755.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39023071 + ... + 39023080.

It is an arithmetic number, because the mean of its divisors is an integer number (117069228).

Almost surely, 2^390230755 is an apocalyptic number.

390230755 is a deficient number, since it is larger than the sum of its proper divisors (78046157).

390230755 is an equidigital number, since it uses as much as digits as its factorization.

390230755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78046156.

The product of its (nonzero) digits is 28350, while the sum is 34.

The square root of 390230755 is about 19754.2591610012. The cubic root of 390230755 is about 730.7584255054.

The spelling of 390230755 in words is "three hundred ninety million, two hundred thirty thousand, seven hundred fifty-five".