99221769 has 24 divisors (see below), whose sum is σ = 148468320. Its totient is φ = 63810432.

The previous prime is 99221767. The next prime is 99221779. The reversal of 99221769 is 96712299.

It is not a de Polignac number, because 99221769 - 2¹ = 99221767 is a prime.

It is a super-2 number, since 2×99221769² = 19689918886978722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99221767) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30577 + ... + 33665.

It is an arithmetic number, because the mean of its divisors is an integer number (6186180).

Almost surely, 2^99221769 is an apocalyptic number.

It is an amenable number.

99221769 is a deficient number, since it is larger than the sum of its proper divisors (49246551).

99221769 is a wasteful number, since it uses less digits than its factorization.

99221769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3221 (or 3218 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 99221769 is about 9961.0124485416. The cubic root of 99221769 is about 462.9516701820.

The spelling of 99221769 in words is "ninety-nine million, two hundred twenty-one thousand, seven hundred sixty-nine".