2139980 has 24 divisors (see below), whose sum is σ = 4563888. Its totient is φ = 842688.

The previous prime is 2139979. The next prime is 2140001. The reversal of 2139980 is 899312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542 + ... + 2138.

It is an arithmetic number, because the mean of its divisors is an integer number (190162).

2^2139980 is an apocalyptic number.

2139980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2139980 is an abundant number, since it is smaller than the sum of its proper divisors (2423908).

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

2139980 is a wasteful number, since it uses less digits than its factorization.

2139980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673 (or 1671 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 2139980 is about 1462.8670479575. The cubic root of 2139980 is about 128.8654728016.

The spelling of 2139980 in words is "two million, one hundred thirty-nine thousand, nine hundred eighty".