399457311 has 32 divisors (see below), whose sum is σ = 614964480. Its totient is φ = 228096000.

The previous prime is 399457309. The next prime is 399457319. The reversal of 399457311 is 113754993.

It is not a de Polignac number, because 399457311 - 2¹ = 399457309 is a prime.

It is a super-2 number, since 2×399457311² = 319132286622701442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399457319) 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 31 ways as a sum of consecutive naturals, for example, 119361 + ... + 122661.

It is an arithmetic number, because the mean of its divisors is an integer number (19217640).

Almost surely, 2^399457311 is an apocalyptic number.

399457311 is a deficient number, since it is larger than the sum of its proper divisors (215507169).

399457311 is a wasteful number, since it uses less digits than its factorization.

399457311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3527.

The product of its digits is 102060, while the sum is 42.

The square root of 399457311 is about 19986.4281701359. The cubic root of 399457311 is about 736.4729350265.

The spelling of 399457311 in words is "three hundred ninety-nine million, four hundred fifty-seven thousand, three hundred eleven".