987795964 has 6 divisors (see below), whose sum is σ = 1728642944. Its totient is φ = 493897980.

The previous prime is 987795961. The next prime is 987795979. The reversal of 987795964 is 469597789.

It is a junction number, because it is equal to n+sod(n) for n = 987795896 and 987795905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987795961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123474492 + ... + 123474499.

Almost surely, 2^987795964 is an apocalyptic number.

It is an amenable number.

987795964 is a deficient number, since it is larger than the sum of its proper divisors (740846980).

987795964 is a wasteful number, since it uses less digits than its factorization.

987795964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246948995 (or 246948993 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 64.

The square root of 987795964 is about 31429.2214984718. The cubic root of 987795964 is about 995.9153261566.

The spelling of 987795964 in words is "nine hundred eighty-seven million, seven hundred ninety-five thousand, nine hundred sixty-four".