1979137 has 4 divisors (see below), whose sum is σ = 1982020. Its totient is φ = 1976256.

The previous prime is 1979129. The next prime is 1979141. The reversal of 1979137 is 7319791.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 104976 + 1874161 = 324^2 + 1369^2 .

It is a cyclic number.

It is not a de Polignac number, because 1979137 - 2³ = 1979129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1979096 and 1979105.

It is not an unprimeable number, because it can be changed into a prime (1979147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253 + ... + 2005.

It is an arithmetic number, because the mean of its divisors is an integer number (495505).

2^1979137 is an apocalyptic number.

It is an amenable number.

1979137 is a deficient number, since it is larger than the sum of its proper divisors (2883).

1979137 is a wasteful number, since it uses less digits than its factorization.

1979137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2882.

The product of its digits is 11907, while the sum is 37.

The square root of 1979137 is about 1406.8180408283. The cubic root of 1979137 is about 125.5524772205.

It can be divided in two parts, 1979 and 137, that added together give a square (2116 = 46²).

The spelling of 1979137 in words is "one million, nine hundred seventy-nine thousand, one hundred thirty-seven".