898989979 has 8 divisors (see below), whose sum is σ = 910820160. Its totient is φ = 887198400.

The previous prime is 898989967. The next prime is 898990031. The reversal of 898989979 is 979989898.

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

It is a cyclic number.

It is not a de Polignac number, because 898989979 - 2¹⁷ = 898858907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (898999979) 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, 38814 + ... + 57484.

It is an arithmetic number, because the mean of its divisors is an integer number (113852520).

Almost surely, 2^898989979 is an apocalyptic number.

898989979 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

898989979 is a deficient number, since it is larger than the sum of its proper divisors (11830181).

898989979 is a wasteful number, since it uses less digits than its factorization.

898989979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19301.

The product of its digits is 211631616, while the sum is 76.

The square root of 898989979 is about 29983.1615911331. The cubic root of 898989979 is about 965.1280773565.

The spelling of 898989979 in words is "eight hundred ninety-eight million, nine hundred eighty-nine thousand, nine hundred seventy-nine".