100389187 has 2 divisors, whose sum is σ = 100389188. Its totient is φ = 100389186.

The previous prime is 100389169. The next prime is 100389193. The reversal of 100389187 is 781983001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100389187 - 2⁷ = 100389059 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100389127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50194593 + 50194594.

It is an arithmetic number, because the mean of its divisors is an integer number (50194594).

Almost surely, 2^100389187 is an apocalyptic number.

100389187 is a deficient number, since it is larger than the sum of its proper divisors (1).

100389187 is an equidigital number, since it uses as much as digits as its factorization.

100389187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 100389187 is about 10019.4404534385. The cubic root of 100389187 is about 464.7602525622.

It can be divided in two parts, 100389 and 187, that added together give a triangular number (100576 = T₄₄₈).

The spelling of 100389187 in words is "one hundred million, three hundred eighty-nine thousand, one hundred eighty-seven".