100901987 has 8 divisors (see below), whose sum is σ = 108302256. Its totient is φ = 93664512.

The previous prime is 100901939. The next prime is 100902013. The reversal of 100901987 is 789109001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100901987 - 2²² = 96707683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100901687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39413 + ... + 41894.

It is an arithmetic number, because the mean of its divisors is an integer number (13537782).

Almost surely, 2^100901987 is an apocalyptic number.

100901987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

100901987 is a deficient number, since it is larger than the sum of its proper divisors (7400269).

100901987 is an equidigital number, since it uses as much as digits as its factorization.

100901987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81397.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 100901987 is about 10044.9981085115. The cubic root of 100901987 is about 465.5502592946.

The spelling of 100901987 in words is "one hundred million, nine hundred one thousand, nine hundred eighty-seven".