99671099 has 4 divisors (see below), whose sum is σ = 108732120. Its totient is φ = 90610080.

The previous prime is 99671069. The next prime is 99671113. The reversal of 99671099 is 99017699.

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

It is not a de Polignac number, because 99671099 - 2¹² = 99667003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99671059) 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, 4530494 + ... + 4530515.

It is an arithmetic number, because the mean of its divisors is an integer number (27183030).

Almost surely, 2^99671099 is an apocalyptic number.

99671099 is a deficient number, since it is larger than the sum of its proper divisors (9061021).

99671099 is a wasteful number, since it uses less digits than its factorization.

99671099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9061020.

The product of its (nonzero) digits is 275562, while the sum is 50.

The square root of 99671099 is about 9983.5414057337. The cubic root of 99671099 is about 463.6494500390.

It can be divided in two parts, 99 and 671099, that multiplied together give a square (66438801 = 8151²).

The spelling of 99671099 in words is "ninety-nine million, six hundred seventy-one thousand, ninety-nine".