99696969 has 6 divisors (see below), whose sum is σ = 144006746. Its totient is φ = 66464640.

The previous prime is 99696967. The next prime is 99697001. The reversal of 99696969 is 96969699.

It can be written as a sum of positive squares in only one way, i.e., 99261369 + 435600 = 9963^2 + 660^2 .

It is not a de Polignac number, because 99696969 - 2¹ = 99696967 is a prime.

It is a super-2 number, since 2×99696969² = 19878971255573922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99696967) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5538712 + ... + 5538729.

Almost surely, 2^99696969 is an apocalyptic number.

It is an amenable number.

99696969 is a deficient number, since it is larger than the sum of its proper divisors (44309777).

99696969 is a wasteful number, since it uses less digits than its factorization.

99696969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11077447 (or 11077444 counting only the distinct ones).

The product of its digits is 12754584, while the sum is 63.

The square root of 99696969 is about 9984.8369541020. The cubic root of 99696969 is about 463.6895605417.

The spelling of 99696969 in words is "ninety-nine million, six hundred ninety-six thousand, nine hundred sixty-nine".