802438979 has 4 divisors (see below), whose sum is σ = 803806584. Its totient is φ = 801071376.

The previous prime is 802438939. The next prime is 802438993. The reversal of 802438979 is 979834208.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-802438979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (802438909) 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, 682922 + ... + 684095.

It is an arithmetic number, because the mean of its divisors is an integer number (200951646).

Almost surely, 2^802438979 is an apocalyptic number.

802438979 is a deficient number, since it is larger than the sum of its proper divisors (1367605).

802438979 is a wasteful number, since it uses less digits than its factorization.

802438979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367604.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 802438979 is about 28327.3539004264. The cubic root of 802438979 is about 929.2602044340.

The spelling of 802438979 in words is "eight hundred two million, four hundred thirty-eight thousand, nine hundred seventy-nine".