99890603 has 4 divisors (see below), whose sum is σ = 100109640. Its totient is φ = 99671568.

The previous prime is 99890579. The next prime is 99890627. The reversal of 99890603 is 30609899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30609899 = 1709 ⋅17911.

It is an interprime number because it is at equal distance from previous prime (99890579) and next prime (99890627).

It is a cyclic number.

It is not a de Polignac number, because 99890603 - 2¹⁰ = 99889579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99890683) 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, 108833 + ... + 109746.

It is an arithmetic number, because the mean of its divisors is an integer number (25027410).

Almost surely, 2^99890603 is an apocalyptic number.

99890603 is a deficient number, since it is larger than the sum of its proper divisors (219037).

99890603 is a wasteful number, since it uses less digits than its factorization.

99890603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219036.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 99890603 is about 9994.5286532182. The cubic root of 99890603 is about 463.9895629712.

The spelling of 99890603 in words is "ninety-nine million, eight hundred ninety thousand, six hundred three".