99148139 has 4 divisors (see below), whose sum is σ = 99168480. Its totient is φ = 99127800.

The previous prime is 99148117. The next prime is 99148171. The reversal of 99148139 is 93184199.

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 99148139 - 2⁸ = 99147883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99148139.

It is not an unprimeable number, because it can be changed into a prime (99148339) 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, 1982 + ... + 14220.

It is an arithmetic number, because the mean of its divisors is an integer number (24792120).

Almost surely, 2^99148139 is an apocalyptic number.

99148139 is a deficient number, since it is larger than the sum of its proper divisors (20341).

99148139 is a wasteful number, since it uses less digits than its factorization.

99148139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20340.

The product of its digits is 69984, while the sum is 44.

The square root of 99148139 is about 9957.3158531805. The cubic root of 99148139 is about 462.8371268815.

The spelling of 99148139 in words is "ninety-nine million, one hundred forty-eight thousand, one hundred thirty-nine".