93097981 has 4 divisors (see below), whose sum is σ = 94057852. Its totient is φ = 92138112.

The previous prime is 93097973. The next prime is 93097987. The reversal of 93097981 is 18979039.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27730756 + 65367225 = 5266^2 + 8085^2 .

It is a cyclic number.

It is not a de Polignac number, because 93097981 - 2³ = 93097973 is a prime.

It is a super-2 number, since 2×93097981² = 17334468132552722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93097987) 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 3 ways as a sum of consecutive naturals, for example, 479790 + ... + 479983.

It is an arithmetic number, because the mean of its divisors is an integer number (23514463).

Almost surely, 2^93097981 is an apocalyptic number.

It is an amenable number.

93097981 is a deficient number, since it is larger than the sum of its proper divisors (959871).

93097981 is an equidigital number, since it uses as much as digits as its factorization.

93097981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959870.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 93097981 is about 9648.7295018567. The cubic root of 93097981 is about 453.2245441928.

The spelling of 93097981 in words is "ninety-three million, ninety-seven thousand, nine hundred eighty-one".