996417987 has 8 divisors (see below), whose sum is σ = 1329021120. Its totient is φ = 664046760.

The previous prime is 996417977. The next prime is 996418009. The reversal of 996417987 is 789714699.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 996417987 - 2⁴ = 996417971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 996417987.

It is not an unprimeable number, because it can be changed into a prime (996417977) 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, 47689 + ... + 65322.

It is an arithmetic number, because the mean of its divisors is an integer number (166127640).

Almost surely, 2^996417987 is an apocalyptic number.

996417987 is a deficient number, since it is larger than the sum of its proper divisors (332603133).

996417987 is a wasteful number, since it uses less digits than its factorization.

996417987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115953.

The product of its digits is 6858432, while the sum is 60.

The square root of 996417987 is about 31566.0891939436. The cubic root of 996417987 is about 998.8045671765.

The spelling of 996417987 in words is "nine hundred ninety-six million, four hundred seventeen thousand, nine hundred eighty-seven".