98171391 has 16 divisors (see below), whose sum is σ = 134668800. Its totient is φ = 63581568.

The previous prime is 98171377. The next prime is 98171393. The reversal of 98171391 is 19317189.

It is not a de Polignac number, because 98171391 - 2⁷ = 98171263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98171393) 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, 17095 + ... + 22103.

It is an arithmetic number, because the mean of its divisors is an integer number (8416800).

Almost surely, 2^98171391 is an apocalyptic number.

98171391 is a deficient number, since it is larger than the sum of its proper divisors (36497409).

98171391 is a wasteful number, since it uses less digits than its factorization.

98171391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5198.

The product of its digits is 13608, while the sum is 39.

The square root of 98171391 is about 9908.1477078211. The cubic root of 98171391 is about 461.3122438603.

The spelling of 98171391 in words is "ninety-eight million, one hundred seventy-one thousand, three hundred ninety-one".