99012603 has 4 divisors (see below), whose sum is σ = 132016808. Its totient is φ = 66008400.

The previous prime is 99012593. The next prime is 99012637. The reversal of 99012603 is 30621099.

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

It is not a de Polignac number, because 99012603 - 2⁴ = 99012587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99012643) 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, 16502098 + ... + 16502103.

It is an arithmetic number, because the mean of its divisors is an integer number (33004202).

Almost surely, 2^99012603 is an apocalyptic number.

99012603 is a deficient number, since it is larger than the sum of its proper divisors (33004205).

99012603 is a wasteful number, since it uses less digits than its factorization.

99012603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33004204.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 99012603 is about 9950.5076754907. The cubic root of 99012603 is about 462.6261304885.

The spelling of 99012603 in words is "ninety-nine million, twelve thousand, six hundred three".