99397951 has 2 divisors, whose sum is σ = 99397952. Its totient is φ = 99397950.

The previous prime is 99397939. The next prime is 99397979. The reversal of 99397951 is 15979399.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99397951 - 2¹⁵ = 99365183 is a prime.

It is a pancake number, because a pancake can be divided into 99397951 parts by 14099 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99397901) 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 as a sum of consecutive naturals, namely, 49698975 + 49698976.

It is an arithmetic number, because the mean of its divisors is an integer number (49698976).

Almost surely, 2^99397951 is an apocalyptic number.

99397951 is a deficient number, since it is larger than the sum of its proper divisors (1).

99397951 is an equidigital number, since it uses as much as digits as its factorization.

99397951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 688905, while the sum is 52.

The square root of 99397951 is about 9969.8521052220. The cubic root of 99397951 is about 463.2255197738.

The spelling of 99397951 in words is "ninety-nine million, three hundred ninety-seven thousand, nine hundred fifty-one".