894136987 has 8 divisors (see below), whose sum is σ = 910185120. Its totient is φ = 878222400.

The previous prime is 894136973. The next prime is 894136993. The reversal of 894136987 is 789631498.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-894136987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (894136907) 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 7 ways as a sum of consecutive naturals, for example, 19828 + ... + 46705.

It is an arithmetic number, because the mean of its divisors is an integer number (113773140).

Almost surely, 2^894136987 is an apocalyptic number.

894136987 is a deficient number, since it is larger than the sum of its proper divisors (16048133).

894136987 is a wasteful number, since it uses less digits than its factorization.

894136987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66773.

The product of its digits is 2612736, while the sum is 55.

The square root of 894136987 is about 29902.1234530259. The cubic root of 894136987 is about 963.3882684662.

The spelling of 894136987 in words is "eight hundred ninety-four million, one hundred thirty-six thousand, nine hundred eighty-seven".