987255959 has 4 divisors (see below), whose sum is σ = 987331800. Its totient is φ = 987180120.

The previous prime is 987255953. The next prime is 987255989. The reversal of 987255959 is 959552789.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 987255959 - 2¹⁶ = 987190423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 987255898 and 987255907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987255953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12884 + ... + 46265.

It is an arithmetic number, because the mean of its divisors is an integer number (246832950).

Almost surely, 2^987255959 is an apocalyptic number.

987255959 is a deficient number, since it is larger than the sum of its proper divisors (75841).

987255959 is a wasteful number, since it uses less digits than its factorization.

987255959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75840.

The product of its digits is 10206000, while the sum is 59.

The square root of 987255959 is about 31420.6295131081. The cubic root of 987255959 is about 995.7338118541.

The spelling of 987255959 in words is "nine hundred eighty-seven million, two hundred fifty-five thousand, nine hundred fifty-nine".