900987 has 8 divisors (see below), whose sum is σ = 1233936. Its totient is φ = 584352.

The previous prime is 900973. The next prime is 900997. The reversal of 900987 is 789009.

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

It is not a de Polignac number, because 900987 - 2⁴ = 900971 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 900987.

It is not an unprimeable number, because it can be changed into a prime (900917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3948 + ... + 4169.

It is an arithmetic number, because the mean of its divisors is an integer number (154242).

2⁹⁰⁰⁹⁸⁷ is an apocalyptic number.

900987 is a deficient number, since it is larger than the sum of its proper divisors (332949).

900987 is a wasteful number, since it uses less digits than its factorization.

900987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8157.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 900987 is about 949.2033501837. The cubic root of 900987 is about 96.5842195673.

The spelling of 900987 in words is "nine hundred thousand, nine hundred eighty-seven".