137987886 has 8 divisors (see below), whose sum is σ = 275975784. Its totient is φ = 45995960.

The previous prime is 137987867. The next prime is 137987891. The reversal of 137987886 is 688789731.

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

137987886 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11498985 + ... + 11498996.

It is an arithmetic number, because the mean of its divisors is an integer number (34496973).

Almost surely, 2^137987886 is an apocalyptic number.

137987886 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137987886 is a wasteful number, since it uses less digits than its factorization.

137987886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22997986.

The product of its digits is 4064256, while the sum is 57.

The square root of 137987886 is about 11746.8245070742. The cubic root of 137987886 is about 516.7498038028.

The spelling of 137987886 in words is "one hundred thirty-seven million, nine hundred eighty-seven thousand, eight hundred eighty-six".