99147139 has 24 divisors (see below), whose sum is σ = 124851888. Its totient is φ = 78039360.

The previous prime is 99147131. The next prime is 99147151. The reversal of 99147139 is 93174199.

It is a happy number.

It is not a de Polignac number, because 99147139 - 2³ = 99147131 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 99147095 and 99147104.

It is not an unprimeable number, because it can be changed into a prime (99147131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201684 + ... + 202174.

It is an arithmetic number, because the mean of its divisors is an integer number (5202162).

Almost surely, 2^99147139 is an apocalyptic number.

99147139 is a deficient number, since it is larger than the sum of its proper divisors (25704749).

99147139 is a wasteful number, since it uses less digits than its factorization.

99147139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835 (or 828 counting only the distinct ones).

The product of its digits is 61236, while the sum is 43.

The square root of 99147139 is about 9957.2656387183. The cubic root of 99147139 is about 462.8355708305.

The spelling of 99147139 in words is "ninety-nine million, one hundred forty-seven thousand, one hundred thirty-nine".