122986487 has 16 divisors (see below), whose sum is σ = 140081760. Its totient is φ = 107039232.

The previous prime is 122986481. The next prime is 122986499. The reversal of 122986487 is 784689221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122986487 - 2⁸ = 122986231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122986481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56483 + ... + 58619.

It is an arithmetic number, because the mean of its divisors is an integer number (8755110).

Almost surely, 2^122986487 is an apocalyptic number.

122986487 is a deficient number, since it is larger than the sum of its proper divisors (17095273).

122986487 is a wasteful number, since it uses less digits than its factorization.

122986487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402.

The product of its digits is 387072, while the sum is 47.

The square root of 122986487 is about 11089.9272765875. The cubic root of 122986487 is about 497.3007705422.

The spelling of 122986487 in words is "one hundred twenty-two million, nine hundred eighty-six thousand, four hundred eighty-seven".