99019509 has 8 divisors (see below), whose sum is σ = 139792320. Its totient is φ = 62129856.

The previous prime is 99019499. The next prime is 99019541. The reversal of 99019509 is 90591099.

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

It is not a de Polignac number, because 99019509 - 2⁷ = 99019381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99019579) 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, 970729 + ... + 970830.

It is an arithmetic number, because the mean of its divisors is an integer number (17474040).

Almost surely, 2^99019509 is an apocalyptic number.

It is an amenable number.

99019509 is a deficient number, since it is larger than the sum of its proper divisors (40772811).

99019509 is a wasteful number, since it uses less digits than its factorization.

99019509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941579.

The product of its (nonzero) digits is 32805, while the sum is 42.

The square root of 99019509 is about 9950.8546869101. The cubic root of 99019509 is about 462.6368860949.

The spelling of 99019509 in words is "ninety-nine million, nineteen thousand, five hundred nine".