1599399072 has 36 divisors (see below), whose sum is σ = 4548291930. Its totient is φ = 533132928.

The previous prime is 1599399071. The next prime is 1599399103. The reversal of 1599399072 is 2709939951.

It can be written as a sum of positive squares in only one way, i.e., 1315948176 + 283450896 = 36276^2 + 16836^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1599399072² = 5116154783028922368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1599399071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2776447 + ... + 2777022.

Almost surely, 2^1599399072 is an apocalyptic number.

1599399072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1599399072 is an abundant number, since it is smaller than the sum of its proper divisors (2948892858).

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

1599399072 is a wasteful number, since it uses less digits than its factorization.

1599399072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553485 (or 5553474 counting only the distinct ones).

The product of its (nonzero) digits is 1377810, while the sum is 54.

The square root of 1599399072 is about 39992.4876945658. The cubic root of 1599399072 is about 1169.4606499387.

The spelling of 1599399072 in words is "one billion, five hundred ninety-nine million, three hundred ninety-nine thousand, seventy-two".