987009378 has 24 divisors (see below), whose sum is σ = 2083387248. Its totient is φ = 311686488.

The previous prime is 987009349. The next prime is 987009383. The reversal of 987009378 is 873900789.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 987009378.

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, 225676 + ... + 230007.

It is an arithmetic number, because the mean of its divisors is an integer number (86807802).

Almost surely, 2^987009378 is an apocalyptic number.

987009378 is an abundant number, since it is smaller than the sum of its proper divisors (1096377870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

987009378 is a wasteful number, since it uses less digits than its factorization.

987009378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455726 (or 455707 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 987009378 is about 31416.7053969699. The cubic root of 987009378 is about 995.6509054639.

The spelling of 987009378 in words is "nine hundred eighty-seven million, nine thousand, three hundred seventy-eight".