390401255 has 8 divisors (see below), whose sum is σ = 468758400. Its totient is φ = 312136416.

The previous prime is 390401201. The next prime is 390401269. The reversal of 390401255 is 552104093.

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 390401255 - 2¹⁸ = 390139111 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13400 + ... + 30989.

It is an arithmetic number, because the mean of its divisors is an integer number (58594800).

Almost surely, 2^390401255 is an apocalyptic number.

390401255 is a deficient number, since it is larger than the sum of its proper divisors (78357145).

390401255 is a wasteful number, since it uses less digits than its factorization.

390401255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46153.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 390401255 is about 19758.5742147555. The cubic root of 390401255 is about 730.8648379023.

The spelling of 390401255 in words is "three hundred ninety million, four hundred one thousand, two hundred fifty-five".