913825987 has 4 divisors (see below), whose sum is σ = 914039800. Its totient is φ = 913612176.

The previous prime is 913825937. The next prime is 913826051. The reversal of 913825987 is 789528319.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789528319 = 1087 ⋅726337.

It is a cyclic number.

It is not a de Polignac number, because 913825987 - 2⁷ = 913825859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (913825907) 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, 100362 + ... + 109087.

It is an arithmetic number, because the mean of its divisors is an integer number (228509950).

Almost surely, 2^913825987 is an apocalyptic number.

913825987 is a deficient number, since it is larger than the sum of its proper divisors (213813).

913825987 is a wasteful number, since it uses less digits than its factorization.

913825987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213812.

The product of its digits is 1088640, while the sum is 52.

The square root of 913825987 is about 30229.5548594418. The cubic root of 913825987 is about 970.4082976634.

The spelling of 913825987 in words is "nine hundred thirteen million, eight hundred twenty-five thousand, nine hundred eighty-seven".