1238979 has 16 divisors (see below), whose sum is σ = 1935360. Its totient is φ = 690240.

The previous prime is 1238947. The next prime is 1238989. The reversal of 1238979 is 9798321.

It is not a de Polignac number, because 1238979 - 2⁵ = 1238947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1238989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142 + ... + 1580.

It is an arithmetic number, because the mean of its divisors is an integer number (120960).

2^1238979 is an apocalyptic number.

1238979 is a deficient number, since it is larger than the sum of its proper divisors (696381).

1238979 is a wasteful number, since it uses less digits than its factorization.

1238979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490.

The product of its digits is 27216, while the sum is 39.

The square root of 1238979 is about 1113.0943356248. The cubic root of 1238979 is about 107.4042124929.

The spelling of 1238979 in words is "one million, two hundred thirty-eight thousand, nine hundred seventy-nine".