99751493 has 2 divisors, whose sum is σ = 99751494. Its totient is φ = 99751492.

The previous prime is 99751441. The next prime is 99751511. The reversal of 99751493 is 39415799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99660289 + 91204 = 9983^2 + 302^2 .

It is a cyclic number.

It is not a de Polignac number, because 99751493 - 2²⁴ = 82974277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99751423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49875746 + 49875747.

It is an arithmetic number, because the mean of its divisors is an integer number (49875747).

Almost surely, 2^99751493 is an apocalyptic number.

It is an amenable number.

99751493 is a deficient number, since it is larger than the sum of its proper divisors (1).

99751493 is an equidigital number, since it uses as much as digits as its factorization.

99751493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 47.

The square root of 99751493 is about 9987.5669209272. The cubic root of 99751493 is about 463.7740753213.

The spelling of 99751493 in words is "ninety-nine million, seven hundred fifty-one thousand, four hundred ninety-three".