900554987 has 4 divisors (see below), whose sum is σ = 901008840. Its totient is φ = 900101136.

The previous prime is 900554971. The next prime is 900554999. The reversal of 900554987 is 789455009.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 900554987 - 2⁴ = 900554971 is a prime.

It is a super-2 number, since 2×900554987² = 1621998569221140338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (900554927) 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 3 ways as a sum of consecutive naturals, for example, 223937 + ... + 227922.

It is an arithmetic number, because the mean of its divisors is an integer number (225252210).

Almost surely, 2^900554987 is an apocalyptic number.

900554987 is a deficient number, since it is larger than the sum of its proper divisors (453853).

900554987 is a wasteful number, since it uses less digits than its factorization.

900554987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453852.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 900554987 is about 30009.2483577980. The cubic root of 900554987 is about 965.6878008848.

The spelling of 900554987 in words is "nine hundred million, five hundred fifty-four thousand, nine hundred eighty-seven".