98091887 has 4 divisors (see below), whose sum is σ = 103862016. Its totient is φ = 92321760.

The previous prime is 98091881. The next prime is 98091893. The reversal of 98091887 is 78819089.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (98091881) and next prime (98091893).

It is a cyclic number.

It is not a de Polignac number, because 98091887 - 2⁴ = 98091871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98091881) 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, 2885039 + ... + 2885072.

It is an arithmetic number, because the mean of its divisors is an integer number (25965504).

Almost surely, 2^98091887 is an apocalyptic number.

98091887 is a deficient number, since it is larger than the sum of its proper divisors (5770129).

98091887 is a wasteful number, since it uses less digits than its factorization.

98091887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5770128.

The product of its (nonzero) digits is 290304, while the sum is 50.

The square root of 98091887 is about 9904.1348435893. The cubic root of 98091887 is about 461.1876791460.

The spelling of 98091887 in words is "ninety-eight million, ninety-one thousand, eight hundred eighty-seven".