998970023 has 16 divisors (see below), whose sum is σ = 1046618496. Its totient is φ = 952617120.

The previous prime is 998970019. The next prime is 998970029. The reversal of 998970023 is 320079899.

It is a cyclic number.

It is not a de Polignac number, because 998970023 - 2² = 998970019 is a prime.

It is a super-2 number, since 2×998970023² = 1995882213705241058, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 998970023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998970029) 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, 516368 + ... + 518298.

It is an arithmetic number, because the mean of its divisors is an integer number (65413656).

Almost surely, 2^998970023 is an apocalyptic number.

998970023 is a deficient number, since it is larger than the sum of its proper divisors (47648473).

998970023 is a wasteful number, since it uses less digits than its factorization.

998970023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 998970023 is about 31606.4870398467. The cubic root of 998970023 is about 999.6565563933.

The spelling of 998970023 in words is "nine hundred ninety-eight million, nine hundred seventy thousand, twenty-three".