99740869 has 2 divisors, whose sum is σ = 99740870. Its totient is φ = 99740868.

The previous prime is 99740791. The next prime is 99740891. The reversal of 99740869 is 96804799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97752769 + 1988100 = 9887^2 + 1410^2 .

It is a cyclic number.

It is not a de Polignac number, because 99740869 - 2¹⁵ = 99708101 is a prime.

It is a super-2 number, since 2×99740869² = 19896481897750322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99740269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49870434 + 49870435.

It is an arithmetic number, because the mean of its divisors is an integer number (49870435).

Almost surely, 2^99740869 is an apocalyptic number.

It is an amenable number.

99740869 is a deficient number, since it is larger than the sum of its proper divisors (1).

99740869 is an equidigital number, since it uses as much as digits as its factorization.

99740869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 99740869 is about 9987.0350454977. The cubic root of 99740869 is about 463.7576100349.

The spelling of 99740869 in words is "ninety-nine million, seven hundred forty thousand, eight hundred sixty-nine".