99885969 has 12 divisors (see below), whose sum is σ = 144415492. Its totient is φ = 66528000.

The previous prime is 99885967. The next prime is 99885979. The reversal of 99885969 is 96958899.

It can be written as a sum of positive squares in 2 ways, for example, as 46785600 + 53100369 = 6840^2 + 7287^2 .

It is not a de Polignac number, because 99885969 - 2¹ = 99885967 is a prime.

It is a super-2 number, since 2×99885969² = 19954413606137922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99885967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6189 + ... + 15429.

Almost surely, 2^99885969 is an apocalyptic number.

It is an amenable number.

99885969 is a deficient number, since it is larger than the sum of its proper divisors (44529523).

99885969 is a wasteful number, since it uses less digits than its factorization.

99885969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10448 (or 10445 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 63.

The square root of 99885969 is about 9994.2968236890. The cubic root of 99885969 is about 463.9823879190.

The spelling of 99885969 in words is "ninety-nine million, eight hundred eighty-five thousand, nine hundred sixty-nine".