99019439 has 8 divisors (see below), whose sum is σ = 103463520. Its totient is φ = 94586976.

The previous prime is 99019433. The next prime is 99019447. The reversal of 99019439 is 93491099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99019439 - 2⁸ = 99019183 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 99019439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99019433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17717 + ... + 22625.

It is an arithmetic number, because the mean of its divisors is an integer number (12932940).

Almost surely, 2^99019439 is an apocalyptic number.

99019439 is a deficient number, since it is larger than the sum of its proper divisors (4444081).

99019439 is a wasteful number, since it uses less digits than its factorization.

99019439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5809.

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 99019439 is about 9950.8511696236. The cubic root of 99019439 is about 462.6367770774.

The spelling of 99019439 in words is "ninety-nine million, nineteen thousand, four hundred thirty-nine".