2139599799 has 32 divisors (see below), whose sum is σ = 3193130240. Its totient is φ = 1415939616.

The previous prime is 2139599797. The next prime is 2139599807. The reversal of 2139599799 is 9979959312.

2139599799 is a `hidden beast` number, since 2 + 1 + 39 + 599 + 7 + 9 + 9 = 666.

It is not a de Polignac number, because 2139599799 - 2¹ = 2139599797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139599797) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3911244 + ... + 3911790.

It is an arithmetic number, because the mean of its divisors is an integer number (99785320).

Almost surely, 2^2139599799 is an apocalyptic number.

2139599799 is a deficient number, since it is larger than the sum of its proper divisors (1053530441).

2139599799 is a wasteful number, since it uses less digits than its factorization.

2139599799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356 (or 1350 counting only the distinct ones).

The product of its digits is 12400290, while the sum is 63.

The square root of 2139599799 is about 46255.8082731239. The cubic root of 2139599799 is about 1288.5784069238.

The spelling of 2139599799 in words is "two billion, one hundred thirty-nine million, five hundred ninety-nine thousand, seven hundred ninety-nine".