399933378348 has 48 divisors (see below), whose sum is σ = 1129223660544. Its totient is φ = 107545109760.

The previous prime is 399933378329. The next prime is 399933378349. The reversal of 399933378348 is 843873339993.

It is not an unprimeable number, because it can be changed into a prime (399933378349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140031268 + ... + 140034123.

It is an arithmetic number, because the mean of its divisors is an integer number (23525492928).

Almost surely, 2^399933378348 is an apocalyptic number.

It is an amenable number.

399933378348 is an abundant number, since it is smaller than the sum of its proper divisors (729290282196).

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

399933378348 is a wasteful number, since it uses less digits than its factorization.

399933378348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280065422 (or 280065420 counting only the distinct ones).

The product of its digits is 317447424, while the sum is 69.

The spelling of 399933378348 in words is "three hundred ninety-nine billion, nine hundred thirty-three million, three hundred seventy-eight thousand, three hundred forty-eight".