100009969 has 2 divisors, whose sum is σ = 100009970. Its totient is φ = 100009968.

The previous prime is 100009933. The next prime is 100009979. The reversal of 100009969 is 969900001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98267569 + 1742400 = 9913^2 + 1320^2 .

It is a cyclic number.

It is not a de Polignac number, because 100009969 - 2⁷ = 100009841 is a prime.

It is a super-2 number, since 2×100009969² = 20003987798761922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100009979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50004984 + 50004985.

It is an arithmetic number, because the mean of its divisors is an integer number (50004985).

Almost surely, 2^100009969 is an apocalyptic number.

It is an amenable number.

100009969 is a deficient number, since it is larger than the sum of its proper divisors (1).

100009969 is an equidigital number, since it uses as much as digits as its factorization.

100009969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 100009969 is about 10000.4984375780. The cubic root of 100009969 is about 464.1743068485.

The spelling of 100009969 in words is "one hundred million, nine thousand, nine hundred sixty-nine".