100208239 has 4 divisors (see below), whose sum is σ = 100939824. Its totient is φ = 99476656.

The previous prime is 100208209. The next prime is 100208279. The reversal of 100208239 is 932802001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100208239 - 2⁷ = 100208111 is a prime.

It is a super-2 number, since 2×100208239² = 20083382326962242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100208209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365587 + ... + 365860.

It is an arithmetic number, because the mean of its divisors is an integer number (25234956).

Almost surely, 2^100208239 is an apocalyptic number.

100208239 is a deficient number, since it is larger than the sum of its proper divisors (731585).

100208239 is an equidigital number, since it uses as much as digits as its factorization.

100208239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731584.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 100208239 is about 10010.4065352013. The cubic root of 100208239 is about 464.4808465860.

The spelling of 100208239 in words is "one hundred million, two hundred eight thousand, two hundred thirty-nine".