98090391 has 32 divisors (see below), whose sum is σ = 160980480. Its totient is φ = 51849216.

The previous prime is 98090381. The next prime is 98090393. The reversal of 98090391 is 19309089.

It is not a de Polignac number, because 98090391 - 2¹⁰ = 98089367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98090393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18735 + ... + 23391.

It is an arithmetic number, because the mean of its divisors is an integer number (5030640).

Almost surely, 2^98090391 is an apocalyptic number.

98090391 is a deficient number, since it is larger than the sum of its proper divisors (62890089).

98090391 is a wasteful number, since it uses less digits than its factorization.

98090391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4743.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 98090391 is about 9904.0593192892. The cubic root of 98090391 is about 461.1853346086.

The spelling of 98090391 in words is "ninety-eight million, ninety thousand, three hundred ninety-one".