99983938 has 8 divisors (see below), whose sum is σ = 155147580. Its totient is φ = 48268080.

The previous prime is 99983929. The next prime is 99983957. The reversal of 99983938 is 83938999.

It can be written as a sum of positive squares in 2 ways, for example, as 91145209 + 8838729 = 9547^2 + 2973^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (58), and also a Moran number because the ratio is a prime number: 1723861 = 99983938 / (9 + 9 + 9 + 8 + 3 + 9 + 3 + 8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861873 + ... + 861988.

Almost surely, 2^99983938 is an apocalyptic number.

99983938 is a deficient number, since it is larger than the sum of its proper divisors (55163642).

99983938 is a wasteful number, since it uses less digits than its factorization.

99983938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723892.

The product of its digits is 3779136, while the sum is 58.

The square root of 99983938 is about 9999.1968677489. The cubic root of 99983938 is about 464.1340309640.

The spelling of 99983938 in words is "ninety-nine million, nine hundred eighty-three thousand, nine hundred thirty-eight".