100309939 has 2 divisors, whose sum is σ = 100309940. Its totient is φ = 100309938.

The previous prime is 100309919. The next prime is 100309967. The reversal of 100309939 is 939903001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100309939 - 2⁵ = 100309907 is a prime.

It is not a weakly prime, because it can be changed into another prime (100309919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50154969 + 50154970.

It is an arithmetic number, because the mean of its divisors is an integer number (50154970).

Almost surely, 2^100309939 is an apocalyptic number.

100309939 is a deficient number, since it is larger than the sum of its proper divisors (1).

100309939 is an equidigital number, since it uses as much as digits as its factorization.

100309939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 100309939 is about 10015.4849607995. The cubic root of 100309939 is about 464.6379252562.

The spelling of 100309939 in words is "one hundred million, three hundred nine thousand, nine hundred thirty-nine".