99938506 has 8 divisors (see below), whose sum is σ = 149970240. Its totient is φ = 49948428.

The previous prime is 99938479. The next prime is 99938521. The reversal of 99938506 is 60583999.

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

It is a self number, because there is not a number n which added to its sum of digits gives 99938506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3496 + ... + 14563.

It is an arithmetic number, because the mean of its divisors is an integer number (18746280).

Almost surely, 2^99938506 is an apocalyptic number.

99938506 is a deficient number, since it is larger than the sum of its proper divisors (50031734).

99938506 is a wasteful number, since it uses less digits than its factorization.

99938506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20828.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 99938506 is about 9996.9248271656. The cubic root of 99938506 is about 464.0637205642.

The spelling of 99938506 in words is "ninety-nine million, nine hundred thirty-eight thousand, five hundred six".