987390365 has 8 divisors (see below), whose sum is σ = 1276012248. Its totient is φ = 729149760.

The previous prime is 987390301. The next prime is 987390377. The reversal of 987390365 is 563093789.

It can be written as a sum of positive squares in 4 ways, for example, as 8826841 + 978563524 = 2971^2 + 31282^2 .

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

It is not a de Polignac number, because 987390365 - 2⁶ = 987390301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7595246 + ... + 7595375.

It is an arithmetic number, because the mean of its divisors is an integer number (159501531).

Almost surely, 2^987390365 is an apocalyptic number.

It is an amenable number.

987390365 is a deficient number, since it is larger than the sum of its proper divisors (288621883).

987390365 is a wasteful number, since it uses less digits than its factorization.

987390365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15190639.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The square root of 987390365 is about 31422.7682580641. The cubic root of 987390365 is about 995.7789965314.

The spelling of 987390365 in words is "nine hundred eighty-seven million, three hundred ninety thousand, three hundred sixty-five".