8999979 has 8 divisors (see below), whose sum is σ = 12070032. Its totient is φ = 5964960.

The previous prime is 8999971. The next prime is 8999981. The reversal of 8999979 is 9799998.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8999979 - 2³ = 8999971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8999971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8152 + ... + 9189.

It is an arithmetic number, because the mean of its divisors is an integer number (1508754).

Almost surely, 2^8999979 is an apocalyptic number.

8999979 is a deficient number, since it is larger than the sum of its proper divisors (3070053).

8999979 is a wasteful number, since it uses less digits than its factorization.

8999979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17517.

The product of its digits is 3306744, while the sum is 60.

The square root of 8999979 is about 2999.9964999980. The cubic root of 8999979 is about 208.0082205208.

It can be divided in two parts, 899 and 9979, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 8999979 in words is "eight million, nine hundred ninety-nine thousand, nine hundred seventy-nine".