99898071 has 32 divisors (see below), whose sum is σ = 165193728. Its totient is φ = 52289280.

The previous prime is 99898061. The next prime is 99898079. The reversal of 99898071 is 17089899.

It is not a de Polignac number, because 99898071 - 2¹⁴ = 99881687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99898079) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36066 + ... + 38736.

It is an arithmetic number, because the mean of its divisors is an integer number (5162304).

Almost surely, 2^99898071 is an apocalyptic number.

99898071 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

99898071 is a deficient number, since it is larger than the sum of its proper divisors (65295657).

99898071 is a wasteful number, since it uses less digits than its factorization.

99898071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831.

The product of its (nonzero) digits is 326592, while the sum is 51.

The square root of 99898071 is about 9994.9022506476. The cubic root of 99898071 is about 464.0011255794.

The spelling of 99898071 in words is "ninety-nine million, eight hundred ninety-eight thousand, seventy-one".