987249015 has 12 divisors (see below), whose sum is σ = 1711231704. Its totient is φ = 526532784.

The previous prime is 987248981. The next prime is 987249037. The reversal of 987249015 is 510942789.

987249015 is a `hidden beast` number, since 98 + 72 + 490 + 1 + 5 = 666.

It is not a de Polignac number, because 987249015 - 2⁷ = 987248887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 21938867 = 987249015 / (9 + 8 + 7 + 2 + 4 + 9 + 0 + 1 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10969389 + ... + 10969478.

It is an arithmetic number, because the mean of its divisors is an integer number (142602642).

Almost surely, 2^987249015 is an apocalyptic number.

987249015 is a deficient number, since it is larger than the sum of its proper divisors (723982689).

987249015 is a wasteful number, since it uses less digits than its factorization.

987249015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21938878 (or 21938875 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 987249015 is about 31420.5190122633. The cubic root of 987249015 is about 995.7314773052.

The spelling of 987249015 in words is "nine hundred eighty-seven million, two hundred forty-nine thousand, fifteen".