399414231 has 12 divisors (see below), whose sum is σ = 578443008. Its totient is φ = 265578624.

The previous prime is 399414227. The next prime is 399414271. The reversal of 399414231 is 132414993.

399414231 is a `hidden beast` number, since 3 + 9 + 9 + 414 + 231 = 666.

It is not a de Polignac number, because 399414231 - 2² = 399414227 is a prime.

It is a super-2 number, since 2×399414231² = 319063455850642722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399414271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54490 + ... + 61383.

It is an arithmetic number, because the mean of its divisors is an integer number (48203584).

Almost surely, 2^399414231 is an apocalyptic number.

399414231 is a deficient number, since it is larger than the sum of its proper divisors (179028777).

399414231 is a wasteful number, since it uses less digits than its factorization.

399414231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116262 (or 116259 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 399414231 is about 19985.3504097376. The cubic root of 399414231 is about 736.4464587767.

It can be divided in two parts, 3994 and 14231, that added together give a square (18225 = 135²).

The spelling of 399414231 in words is "three hundred ninety-nine million, four hundred fourteen thousand, two hundred thirty-one".