99760891 has 4 divisors (see below), whose sum is σ = 99815112. Its totient is φ = 99706672.

The previous prime is 99760853. The next prime is 99760919. The reversal of 99760891 is 19806799.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99760891 - 2⁷ = 99760763 is a prime.

It is a super-2 number, since 2×99760891² = 19904470746227762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99760291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24250 + ... + 28063.

It is an arithmetic number, because the mean of its divisors is an integer number (24953778).

Almost surely, 2^99760891 is an apocalyptic number.

99760891 is a deficient number, since it is larger than the sum of its proper divisors (54221).

99760891 is a wasteful number, since it uses less digits than its factorization.

99760891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54220.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 99760891 is about 9988.0373948038. The cubic root of 99760891 is about 463.7886395541.

The spelling of 99760891 in words is "ninety-nine million, seven hundred sixty thousand, eight hundred ninety-one".