8979861 has 16 divisors (see below), whose sum is σ = 13382208. Its totient is φ = 5308800.

The previous prime is 8979857. The next prime is 8979881. The reversal of 8979861 is 1689798.

It is a happy number.

It is not a de Polignac number, because 8979861 - 2² = 8979857 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8979861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8979811) 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, 1966 + ... + 4671.

It is an arithmetic number, because the mean of its divisors is an integer number (836388).

Almost surely, 2^8979861 is an apocalyptic number.

It is an amenable number.

8979861 is a deficient number, since it is larger than the sum of its proper divisors (4402347).

8979861 is a wasteful number, since it uses less digits than its factorization.

8979861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6692.

The product of its digits is 217728, while the sum is 48.

The square root of 8979861 is about 2996.6416202142. The cubic root of 8979861 is about 207.8531152944.

The spelling of 8979861 in words is "eight million, nine hundred seventy-nine thousand, eight hundred sixty-one".