100398087 has 24 divisors (see below), whose sum is σ = 150852000. Its totient is φ = 64266048.

The previous prime is 100398061. The next prime is 100398091. The reversal of 100398087 is 780893001.

It is not a de Polignac number, because 100398087 - 2⁸ = 100397831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100398017) 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 23 ways as a sum of consecutive naturals, for example, 50973 + ... + 52905.

It is an arithmetic number, because the mean of its divisors is an integer number (6285500).

Almost surely, 2^100398087 is an apocalyptic number.

100398087 is a deficient number, since it is larger than the sum of its proper divisors (50453913).

100398087 is a wasteful number, since it uses less digits than its factorization.

100398087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167 (or 2164 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 100398087 is about 10019.8845801736. The cubic root of 100398087 is about 464.7739865912.

The spelling of 100398087 in words is "one hundred million, three hundred ninety-eight thousand, eighty-seven".