99937855 has 4 divisors (see below), whose sum is σ = 119925432. Its totient is φ = 79950280.

The previous prime is 99937847. The next prime is 99937861. The reversal of 99937855 is 55873999.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 99937855 - 2³ = 99937847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99937796 and 99937805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9993781 + ... + 9993790.

It is an arithmetic number, because the mean of its divisors is an integer number (29981358).

Almost surely, 2^99937855 is an apocalyptic number.

99937855 is a deficient number, since it is larger than the sum of its proper divisors (19987577).

99937855 is a wasteful number, since it uses less digits than its factorization.

99937855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19987576.

The product of its digits is 3061800, while the sum is 55.

The square root of 99937855 is about 9996.8922670998. The cubic root of 99937855 is about 464.0627129241.

The spelling of 99937855 in words is "ninety-nine million, nine hundred thirty-seven thousand, eight hundred fifty-five".