99761399 has 2 divisors, whose sum is σ = 99761400. Its totient is φ = 99761398.

The previous prime is 99761393. The next prime is 99761407. The reversal of 99761399 is 99316799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99761399 - 2⁴ = 99761383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99761399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99761393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49880699 + 49880700.

It is an arithmetic number, because the mean of its divisors is an integer number (49880700).

Almost surely, 2^99761399 is an apocalyptic number.

99761399 is a deficient number, since it is larger than the sum of its proper divisors (1).

99761399 is an equidigital number, since it uses as much as digits as its factorization.

99761399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 826686, while the sum is 53.

The square root of 99761399 is about 9988.0628251929. The cubic root of 99761399 is about 463.7894267838.

The spelling of 99761399 in words is "ninety-nine million, seven hundred sixty-one thousand, three hundred ninety-nine".