399376326 has 32 divisors (see below), whose sum is σ = 819554400. Its totient is φ = 129669120.

The previous prime is 399376273. The next prime is 399376331. The reversal of 399376326 is 623673993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247410 + ... + 249018.

It is an arithmetic number, because the mean of its divisors is an integer number (25611075).

Almost surely, 2^399376326 is an apocalyptic number.

399376326 is an abundant number, since it is smaller than the sum of its proper divisors (420178074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399376326 is a wasteful number, since it uses less digits than its factorization.

399376326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664.

The product of its digits is 1102248, while the sum is 48.

The square root of 399376326 is about 19984.4020676126. The cubic root of 399376326 is about 736.4231614210.

The spelling of 399376326 in words is "three hundred ninety-nine million, three hundred seventy-six thousand, three hundred twenty-six".