987877144 has 32 divisors (see below), whose sum is σ = 1869235200. Its totient is φ = 489434400.

The previous prime is 987877133. The next prime is 987877147. The reversal of 987877144 is 441778789.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987877147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505369 + ... + 507319.

It is an arithmetic number, because the mean of its divisors is an integer number (58413600).

Almost surely, 2^987877144 is an apocalyptic number.

It is an amenable number.

987877144 is a deficient number, since it is larger than the sum of its proper divisors (881358056).

987877144 is a wasteful number, since it uses less digits than its factorization.

987877144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503 (or 2499 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 55.

The square root of 987877144 is about 31430.5129452257. The cubic root of 987877144 is about 995.9426078337.

The spelling of 987877144 in words is "nine hundred eighty-seven million, eight hundred seventy-seven thousand, one hundred forty-four".