99759971 has 4 divisors (see below), whose sum is σ = 103200000. Its totient is φ = 96319944.

The previous prime is 99759967. The next prime is 99760009. The reversal of 99759971 is 17995799.

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 99759971 - 2² = 99759967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99759071) 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, 1719971 + ... + 1720028.

It is an arithmetic number, because the mean of its divisors is an integer number (25800000).

Almost surely, 2^99759971 is an apocalyptic number.

99759971 is a deficient number, since it is larger than the sum of its proper divisors (3440029).

99759971 is a wasteful number, since it uses less digits than its factorization.

99759971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3440028.

The product of its digits is 1607445, while the sum is 56.

The square root of 99759971 is about 9987.9913396038. The cubic root of 99759971 is about 463.7872138556.

The spelling of 99759971 in words is "ninety-nine million, seven hundred fifty-nine thousand, nine hundred seventy-one".