99707838 has 8 divisors (see below), whose sum is σ = 199415688. Its totient is φ = 33235944.

The previous prime is 99707837. The next prime is 99707849. The reversal of 99707838 is 83870799.

It is a happy number.

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

99707838 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99707837) 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, 8308981 + ... + 8308992.

It is an arithmetic number, because the mean of its divisors is an integer number (24926961).

Almost surely, 2^99707838 is an apocalyptic number.

99707838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

99707838 is a wasteful number, since it uses less digits than its factorization.

99707838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16617978.

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 99707838 is about 9985.3812145556. The cubic root of 99707838 is about 463.7064104645.

The spelling of 99707838 in words is "ninety-nine million, seven hundred seven thousand, eight hundred thirty-eight".