98933991 has 32 divisors (see below), whose sum is σ = 145474560. Its totient is φ = 59439744.

The previous prime is 98933983. The next prime is 98934047. The reversal of 98933991 is 19933989.

It is not a de Polignac number, because 98933991 - 2³ = 98933983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98933911) 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, 502105 + ... + 502301.

It is an arithmetic number, because the mean of its divisors is an integer number (4546080).

Almost surely, 2^98933991 is an apocalyptic number.

98933991 is a deficient number, since it is larger than the sum of its proper divisors (46540569).

98933991 is a wasteful number, since it uses less digits than its factorization.

98933991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455.

The product of its digits is 472392, while the sum is 51.

The square root of 98933991 is about 9946.5567409029. The cubic root of 98933991 is about 462.5036625958.

It can be divided in two parts, 989 and 33991, that added together give a triangular number (34980 = T₂₆₄).

The spelling of 98933991 in words is "ninety-eight million, nine hundred thirty-three thousand, nine hundred ninety-one".