93098721 has 4 divisors (see below), whose sum is σ = 124131632. Its totient is φ = 62065812.

The previous prime is 93098683. The next prime is 93098723. The reversal of 93098721 is 12789039.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12789039 = 3 ⋅4263013.

It is not a de Polignac number, because 93098721 - 2⁹ = 93098209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 93098721.

It is not an unprimeable number, because it can be changed into a prime (93098723) 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, 15516451 + ... + 15516456.

It is an arithmetic number, because the mean of its divisors is an integer number (31032908).

Almost surely, 2^93098721 is an apocalyptic number.

It is an amenable number.

93098721 is a deficient number, since it is larger than the sum of its proper divisors (31032911).

93098721 is a wasteful number, since it uses less digits than its factorization.

93098721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31032910.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 93098721 is about 9648.7678487981. The cubic root of 93098721 is about 453.2257450254.

The spelling of 93098721 in words is "ninety-three million, ninety-eight thousand, seven hundred twenty-one".