987434667 has 12 divisors (see below), whose sum is σ = 1444349920. Its totient is φ = 649956528.

The previous prime is 987434621. The next prime is 987434699. The reversal of 987434667 is 766434789.

It is a happy number.

It is not a de Polignac number, because 987434667 - 2¹⁸ = 987172523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987434867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 693688 + ... + 695109.

Almost surely, 2^987434667 is an apocalyptic number.

987434667 is a deficient number, since it is larger than the sum of its proper divisors (456915253).

987434667 is a wasteful number, since it uses less digits than its factorization.

987434667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388882 (or 1388879 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The square root of 987434667 is about 31423.4731848661. The cubic root of 987434667 is about 995.7938891017.

The spelling of 987434667 in words is "nine hundred eighty-seven million, four hundred thirty-four thousand, six hundred sixty-seven".