390472859 has 4 divisors (see below), whose sum is σ = 446254704. Its totient is φ = 334691016.

The previous prime is 390472843. The next prime is 390472861. The reversal of 390472859 is 958274093.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 390472859 - 2⁴ = 390472843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390472759) 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, 27890912 + ... + 27890925.

It is an arithmetic number, because the mean of its divisors is an integer number (111563676).

Almost surely, 2^390472859 is an apocalyptic number.

390472859 is a deficient number, since it is larger than the sum of its proper divisors (55781845).

390472859 is an equidigital number, since it uses as much as digits as its factorization.

390472859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55781844.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 390472859 is about 19760.3861045274. The cubic root of 390472859 is about 730.9095181265.

The spelling of 390472859 in words is "three hundred ninety million, four hundred seventy-two thousand, eight hundred fifty-nine".