2139254472 has 64 divisors (see below), whose sum is σ = 5710510080. Its totient is φ = 666211392.

The previous prime is 2139254443. The next prime is 2139254489. The reversal of 2139254472 is 2744529312.

It is a self number, because there is not a number n which added to its sum of digits gives 2139254472.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21328 + ... + 68799.

It is an arithmetic number, because the mean of its divisors is an integer number (89226720).

Almost surely, 2^2139254472 is an apocalyptic number.

It is an amenable number.

2139254472 is an abundant number, since it is smaller than the sum of its proper divisors (3571255608).

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

2139254472 is a wasteful number, since it uses less digits than its factorization.

2139254472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90202 (or 90198 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 2139254472 is about 46252.0753264110. The cubic root of 2139254472 is about 1288.5090785604.

The spelling of 2139254472 in words is "two billion, one hundred thirty-nine million, two hundred fifty-four thousand, four hundred seventy-two".