2139087400 has 48 divisors (see below), whose sum is σ = 5189623200. Its totient is φ = 818431680.

The previous prime is 2139087337. The next prime is 2139087403. The reversal of 2139087400 is 47809312.

It is not an unprimeable number, because it can be changed into a prime (2139087403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227910 + ... + 237109.

It is an arithmetic number, because the mean of its divisors is an integer number (108117150).

Almost surely, 2^2139087400 is an apocalyptic number.

2139087400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2139087400 is an abundant number, since it is smaller than the sum of its proper divisors (3050535800).

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

2139087400 is a wasteful number, since it uses less digits than its factorization.

2139087400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465058 (or 465049 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 2139087400 is about 46250.2691884058. The cubic root of 2139087400 is about 1288.4755342586.

The spelling of 2139087400 in words is "two billion, one hundred thirty-nine million, eighty-seven thousand, four hundred".