99140999 has 2 divisors, whose sum is σ = 99141000. Its totient is φ = 99140998.

The previous prime is 99140989. The next prime is 99141011. The reversal of 99140999 is 99904199.

It is a weak prime.

It is an emirp because it is prime and its reverse (99904199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99140999 - 2¹⁶ = 99075463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99140959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49570499 + 49570500.

It is an arithmetic number, because the mean of its divisors is an integer number (49570500).

Almost surely, 2^99140999 is an apocalyptic number.

99140999 is a deficient number, since it is larger than the sum of its proper divisors (1).

99140999 is an equidigital number, since it uses as much as digits as its factorization.

99140999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 236196, while the sum is 50.

The square root of 99140999 is about 9956.9573163693. The cubic root of 99140999 is about 462.8260164480.

The spelling of 99140999 in words is "ninety-nine million, one hundred forty thousand, nine hundred ninety-nine".