99021003 has 16 divisors (see below), whose sum is σ = 138067200. Its totient is φ = 63006944.

The previous prime is 99020981. The next prime is 99021017. The reversal of 99021003 is 30012099.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99021003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99021023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37573 + ... + 40121.

It is an arithmetic number, because the mean of its divisors is an integer number (8629200).

Almost surely, 2^99021003 is an apocalyptic number.

99021003 is a deficient number, since it is larger than the sum of its proper divisors (39046197).

99021003 is a wasteful number, since it uses less digits than its factorization.

99021003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 99021003 is about 9950.9297555555. The cubic root of 99021003 is about 462.6392128285.

The spelling of 99021003 in words is "ninety-nine million, twenty-one thousand, three".