99687119 has 10 divisors (see below), whose sum is σ = 116297520. Its totient is φ = 85444044.

The previous prime is 99687073. The next prime is 99687157. The reversal of 99687119 is 91178699.

It is a de Polignac number, because none of the positive numbers 2^k-99687119 is a prime.

It is a super-2 number, since 2×99687119² = 19875043389040322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99687169) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 18359 + ... + 23160.

It is an arithmetic number, because the mean of its divisors is an integer number (11629752).

Almost surely, 2^99687119 is an apocalyptic number.

99687119 is a deficient number, since it is larger than the sum of its proper divisors (16610401).

99687119 is an frugal number, since it uses more digits than its factorization.

99687119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41547 (or 41526 counting only the distinct ones).

The product of its digits is 244944, while the sum is 50.

The square root of 99687119 is about 9984.3436940041. The cubic root of 99687119 is about 463.6742892898.

The spelling of 99687119 in words is "ninety-nine million, six hundred eighty-seven thousand, one hundred nineteen".