396661255 has 16 divisors (see below), whose sum is σ = 505384704. Its totient is φ = 297838080.

The previous prime is 396661249. The next prime is 396661267. The reversal of 396661255 is 552166693.

It is not a de Polignac number, because 396661255 - 2⁹ = 396660743 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25450 + ... + 37960.

It is an arithmetic number, because the mean of its divisors is an integer number (31586544).

Almost surely, 2^396661255 is an apocalyptic number.

396661255 is a deficient number, since it is larger than the sum of its proper divisors (108723449).

396661255 is a wasteful number, since it uses less digits than its factorization.

396661255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12906.

The product of its digits is 291600, while the sum is 43.

The square root of 396661255 is about 19916.3564689930. The cubic root of 396661255 is about 734.7505624647.

The spelling of 396661255 in words is "three hundred ninety-six million, six hundred sixty-one thousand, two hundred fifty-five".