987136417 has 2 divisors, whose sum is σ = 987136418. Its totient is φ = 987136416.

The previous prime is 987136387. The next prime is 987136429. The reversal of 987136417 is 714631789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 777350161 + 209786256 = 27881^2 + 14484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-987136417 is a prime.

It is not a weakly prime, because it can be changed into another prime (987196417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493568208 + 493568209.

It is an arithmetic number, because the mean of its divisors is an integer number (493568209).

Almost surely, 2^987136417 is an apocalyptic number.

It is an amenable number.

987136417 is a deficient number, since it is larger than the sum of its proper divisors (1).

987136417 is an equidigital number, since it uses as much as digits as its factorization.

987136417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 987136417 is about 31418.7271702722. The cubic root of 987136417 is about 995.6936207179.

The spelling of 987136417 in words is "nine hundred eighty-seven million, one hundred thirty-six thousand, four hundred seventeen".