79010989 has 4 divisors (see below), whose sum is σ = 79073856. Its totient is φ = 78948124.

The previous prime is 79010963. The next prime is 79011011. The reversal of 79010989 is 98901097.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98901097 = 433 ⋅228409.

It is a cyclic number.

It is not a de Polignac number, because 79010989 - 2⁷ = 79010861 is a prime.

79010989 is a modest number, since divided by 10989 gives 79 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79010929) 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, 29509 + ... + 32074.

It is an arithmetic number, because the mean of its divisors is an integer number (19768464).

Almost surely, 2^79010989 is an apocalyptic number.

It is an amenable number.

79010989 is a deficient number, since it is larger than the sum of its proper divisors (62867).

79010989 is a wasteful number, since it uses less digits than its factorization.

79010989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62866.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 79010989 is about 8888.8125753669. The cubic root of 79010989 is about 429.1039371580.

The spelling of 79010989 in words is "seventy-nine million, ten thousand, nine hundred eighty-nine".