99989903 has 8 divisors (see below), whose sum is σ = 114015888. Its totient is φ = 86868864.

The previous prime is 99989891. The next prime is 99989909. The reversal of 99989903 is 30998999.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 99989903 - 2⁴ = 99989887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99989909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226001 + ... + 226442.

It is an arithmetic number, because the mean of its divisors is an integer number (14251986).

Almost surely, 2^99989903 is an apocalyptic number.

99989903 is a deficient number, since it is larger than the sum of its proper divisors (14025985).

99989903 is a wasteful number, since it uses less digits than its factorization.

99989903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452473.

The product of its (nonzero) digits is 1417176, while the sum is 56.

The square root of 99989903 is about 9999.4951372557. The cubic root of 99989903 is about 464.1432607946.

The spelling of 99989903 in words is "ninety-nine million, nine hundred eighty-nine thousand, nine hundred three".