900513987 has 16 divisors (see below), whose sum is σ = 1338226560. Its totient is φ = 535289472.

The previous prime is 900513983. The next prime is 900514001. The reversal of 900513987 is 789315009.

It is a happy number.

It is not a de Polignac number, because 900513987 - 2² = 900513983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (900513983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 463693 + ... + 465630.

It is an arithmetic number, because the mean of its divisors is an integer number (83639160).

Almost surely, 2^900513987 is an apocalyptic number.

900513987 is a deficient number, since it is larger than the sum of its proper divisors (437712573).

900513987 is a wasteful number, since it uses less digits than its factorization.

900513987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929362.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 900513987 is about 30008.5652272814. The cubic root of 900513987 is about 965.6731455514.

The spelling of 900513987 in words is "nine hundred million, five hundred thirteen thousand, nine hundred eighty-seven".