2899997831844 has 81 divisors (see below), whose sum is σ = 7592819938977. Its totient is φ = 933237271008.

The previous prime is 2899997831837. The next prime is 2899997831879. The reversal of 2899997831844 is 4481387999982.

The square root of 2899997831844 is 1702938.

It is a perfect power (a square), and thus also a powerful number.

2899997831844 is a `hidden beast` number, since 28 + 99 + 99 + 78 + 318 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1520688518244 + 1379309313600 = 1233162^2 + 1174440^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 296306319 + ... + 296316105.

Almost surely, 2^{2899997831844} is an apocalyptic number.

2899997831844 is the 1702938-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2899997831844

2899997831844 is an abundant number, since it is smaller than the sum of its proper divisors (4692822107133).

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

2899997831844 is an frugal number, since it uses more digits than its factorization.

2899997831844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19642 (or 9821 counting only the distinct ones).

The product of its digits is 2257403904, while the sum is 81.

Multiplying 2899997831844 by its sum of digits (81), we get a square (234899824379364 = 15326442²).

The spelling of 2899997831844 in words is "two trillion, eight hundred ninety-nine billion, nine hundred ninety-seven million, eight hundred thirty-one thousand, eight hundred forty-four".