102099969 has 12 divisors (see below), whose sum is σ = 148999396. Its totient is φ = 67364352.

The previous prime is 102099961. The next prime is 102099997. The reversal of 102099969 is 969990201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28483569 + 73616400 = 5337^2 + 8580^2 .

It is not a de Polignac number, because 102099969 - 2³ = 102099961 is a prime.

It is a super-2 number, since 2×102099969² = 20848807339601922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102099961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57604 + ... + 59349.

Almost surely, 2^102099969 is an apocalyptic number.

It is an amenable number.

102099969 is a deficient number, since it is larger than the sum of its proper divisors (46899427).

102099969 is a wasteful number, since it uses less digits than its factorization.

102099969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117056 (or 117053 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 45.

The square root of 102099969 is about 10104.4529292783. The cubic root of 102099969 is about 467.3854661420.

The spelling of 102099969 in words is "one hundred two million, ninety-nine thousand, nine hundred sixty-nine".