898979971 has 2 divisors, whose sum is σ = 898979972. Its totient is φ = 898979970.

The previous prime is 898979933. The next prime is 898979987. The reversal of 898979971 is 179979898.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 898979971 - 2¹³ = 898971779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 898979897 and 898979906.

It is not a weakly prime, because it can be changed into another prime (898979171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449489985 + 449489986.

It is an arithmetic number, because the mean of its divisors is an integer number (449489986).

Almost surely, 2^898979971 is an apocalyptic number.

898979971 is a deficient number, since it is larger than the sum of its proper divisors (1).

898979971 is an equidigital number, since it uses as much as digits as its factorization.

898979971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20575296, while the sum is 67.

The square root of 898979971 is about 29982.9946969945. The cubic root of 898979971 is about 965.1244959159.

The spelling of 898979971 in words is "eight hundred ninety-eight million, nine hundred seventy-nine thousand, nine hundred seventy-one".