99760121 has 4 divisors (see below), whose sum is σ = 101126772. Its totient is φ = 98393472.

The previous prime is 99760117. The next prime is 99760123. The reversal of 99760121 is 12106799.

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

It can be written as a sum of positive squares in 2 ways, for example, as 87235600 + 12524521 = 9340^2 + 3539^2 .

It is a cyclic number.

It is not a de Polignac number, because 99760121 - 2² = 99760117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99760123) 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, 683216 + ... + 683361.

It is an arithmetic number, because the mean of its divisors is an integer number (25281693).

Almost surely, 2^99760121 is an apocalyptic number.

It is an amenable number.

99760121 is a deficient number, since it is larger than the sum of its proper divisors (1366651).

99760121 is a wasteful number, since it uses less digits than its factorization.

99760121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366650.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 99760121 is about 9987.9988486183. The cubic root of 99760121 is about 463.7874463070.

The spelling of 99760121 in words is "ninety-nine million, seven hundred sixty thousand, one hundred twenty-one".