1999979334 has 24 divisors (see below), whose sum is σ = 4348943040. Its totient is φ = 664251408.

The previous prime is 1999979323. The next prime is 1999979341. The reversal of 1999979334 is 4339799991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195574 + ... + 205545.

It is an arithmetic number, because the mean of its divisors is an integer number (181205960).

Almost surely, 2^1999979334 is an apocalyptic number.

1999979334 is an abundant number, since it is smaller than the sum of its proper divisors (2348963706).

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

1999979334 is a wasteful number, since it uses less digits than its factorization.

1999979334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401404 (or 401401 counting only the distinct ones).

The product of its digits is 14880348, while the sum is 63.

The square root of 1999979334 is about 44721.1284964948. The cubic root of 1999979334 is about 1259.9167102919.

The spelling of 1999979334 in words is "one billion, nine hundred ninety-nine million, nine hundred seventy-nine thousand, three hundred thirty-four".