2139009312 has 48 divisors (see below), whose sum is σ = 6125347872. Its totient is φ = 648184320.

The previous prime is 2139009259. The next prime is 2139009317.

It is a happy number.

2139009312 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 2139009312.

It is not an unprimeable number, because it can be changed into a prime (2139009317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1011733 + ... + 1013844.

It is an arithmetic number, because the mean of its divisors is an integer number (127611414).

Almost surely, 2^2139009312 is an apocalyptic number.

2139009312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2139009312 is an abundant number, since it is smaller than the sum of its proper divisors (3986338560).

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

2139009312 is a wasteful number, since it uses less digits than its factorization.

2139009312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025601 (or 2025593 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 2139009312 is about 46249.4249910202. The cubic root of 2139009312 is about 1288.4598553446.

The spelling of 2139009312 in words is "two billion, one hundred thirty-nine million, nine thousand, three hundred twelve".