1979159 has 18 divisors (see below), whose sum is σ = 2503440. Its totient is φ = 1559376.

The previous prime is 1979149. The next prime is 1979171. The reversal of 1979159 is 9519791.

It is a happy number.

It is not a de Polignac number, because 1979159 - 2⁴ = 1979143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979119) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8162 + ... + 8400.

It is an arithmetic number, because the mean of its divisors is an integer number (139080).

2^1979159 is an apocalyptic number.

1979159 is a deficient number, since it is larger than the sum of its proper divisors (524281).

1979159 is a wasteful number, since it uses less digits than its factorization.

1979159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 259 counting only the distinct ones).

The product of its digits is 25515, while the sum is 41.

The square root of 1979159 is about 1406.8258598704. The cubic root of 1979159 is about 125.5529424307.

The spelling of 1979159 in words is "one million, nine hundred seventy-nine thousand, one hundred fifty-nine".