98889643 has 4 divisors (see below), whose sum is σ = 99003280. Its totient is φ = 98776008.

The previous prime is 98889631. The next prime is 98889649. The reversal of 98889643 is 34698889.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34698889 = 31 ⋅1119319.

It is a cyclic number.

It is not a de Polignac number, because 98889643 - 2⁵ = 98889611 is a prime.

It is a super-2 number, since 2×98889643² = 19558322985334898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98889649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55503 + ... + 57256.

It is an arithmetic number, because the mean of its divisors is an integer number (24750820).

Almost surely, 2^98889643 is an apocalyptic number.

98889643 is a deficient number, since it is larger than the sum of its proper divisors (113637).

98889643 is a wasteful number, since it uses less digits than its factorization.

98889643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113636.

The product of its digits is 2985984, while the sum is 55.

The square root of 98889643 is about 9944.3271768381. The cubic root of 98889643 is about 462.4345452050.

The spelling of 98889643 in words is "ninety-eight million, eight hundred eighty-nine thousand, six hundred forty-three".