99728469 has 16 divisors (see below), whose sum is σ = 148814400. Its totient is φ = 66004848.

The previous prime is 99728449. The next prime is 99728471. The reversal of 99728469 is 96482799.

It is not a de Polignac number, because 99728469 - 2²⁵ = 66174037 is a prime.

It is a super-2 number, since 2×99728469² = 19891535058167922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99728429) 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, 9534 + ... + 17039.

It is an arithmetic number, because the mean of its divisors is an integer number (9300900).

Almost surely, 2^99728469 is an apocalyptic number.

It is an amenable number.

99728469 is a deficient number, since it is larger than the sum of its proper divisors (49085931).

99728469 is a wasteful number, since it uses less digits than its factorization.

99728469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26721 (or 26715 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 99728469 is about 9986.4142213309. The cubic root of 99728469 is about 463.7383907896.

The spelling of 99728469 in words is "ninety-nine million, seven hundred twenty-eight thousand, four hundred sixty-nine".