399792834 has 48 divisors (see below), whose sum is σ = 1026637248. Its totient is φ = 114225552.

The previous prime is 399792821. The next prime is 399792853. The reversal of 399792834 is 438297993.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55357 + ... + 62160.

It is an arithmetic number, because the mean of its divisors is an integer number (21388276).

Almost surely, 2^399792834 is an apocalyptic number.

399792834 is an abundant number, since it is smaller than the sum of its proper divisors (626844414).

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

399792834 is a wasteful number, since it uses less digits than its factorization.

399792834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117541 (or 117529 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 399792834 is about 19994.8201792364. The cubic root of 399792834 is about 736.6790767504.

The spelling of 399792834 in words is "three hundred ninety-nine million, seven hundred ninety-two thousand, eight hundred thirty-four".