99964493 has 2 divisors, whose sum is σ = 99964494. Its totient is φ = 99964492.

The previous prime is 99964483. The next prime is 99964499. The reversal of 99964493 is 39446999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99960004 + 4489 = 9998^2 + 67^2 .

It is a cyclic number.

It is not a de Polignac number, because 99964493 - 2¹⁰ = 99963469 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99964499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49982246 + 49982247.

It is an arithmetic number, because the mean of its divisors is an integer number (49982247).

Almost surely, 2^99964493 is an apocalyptic number.

It is an amenable number.

99964493 is a deficient number, since it is larger than the sum of its proper divisors (1).

99964493 is an equidigital number, since it uses as much as digits as its factorization.

99964493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1889568, while the sum is 53.

The square root of 99964493 is about 9998.2244923786. The cubic root of 99964493 is about 464.1039405597.

The spelling of 99964493 in words is "ninety-nine million, nine hundred sixty-four thousand, four hundred ninety-three".