99919506 has 32 divisors (see below), whose sum is σ = 213796800. Its totient is φ = 31021056.

The previous prime is 99919483. The next prime is 99919511. The reversal of 99919506 is 60591999.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4845 + ... + 14943.

It is an arithmetic number, because the mean of its divisors is an integer number (6681150).

Almost surely, 2^99919506 is an apocalyptic number.

99919506 is an abundant number, since it is smaller than the sum of its proper divisors (113877294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99919506 is a wasteful number, since it uses less digits than its factorization.

99919506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10218.

The product of its (nonzero) digits is 196830, while the sum is 48.

The square root of 99919506 is about 9995.9744897634. The cubic root of 99919506 is about 464.0343099134.

The spelling of 99919506 in words is "ninety-nine million, nine hundred nineteen thousand, five hundred six".