2137979 has 2 divisors, whose sum is σ = 2137980. Its totient is φ = 2137978.

The previous prime is 2137973. The next prime is 2137981. The reversal of 2137979 is 9797312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2137979 - 2⁴ = 2137963 is a prime.

Together with 2137981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2137973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068989 + 1068990.

It is an arithmetic number, because the mean of its divisors is an integer number (1068990).

2^2137979 is an apocalyptic number.

2137979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2137979 is an equidigital number, since it uses as much as digits as its factorization.

2137979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23814, while the sum is 38.

The square root of 2137979 is about 1462.1829570885. The cubic root of 2137979 is about 128.8252948212.

It can be divided in two parts, 213 and 7979, that added together give a 13-th power (8192 = 2¹³).

The spelling of 2137979 in words is "two million, one hundred thirty-seven thousand, nine hundred seventy-nine".