139116986 has 8 divisors (see below), whose sum is σ = 209388564. Its totient is φ = 69320800.

The previous prime is 139116961. The next prime is 139117007. The reversal of 139116986 is 689611931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 137616361 + 1500625 = 11731^2 + 1225^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118115 + ... + 119286.

Almost surely, 2^139116986 is an apocalyptic number.

139116986 is a deficient number, since it is larger than the sum of its proper divisors (70271578).

139116986 is a wasteful number, since it uses less digits than its factorization.

139116986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237696.

The product of its digits is 69984, while the sum is 44.

The square root of 139116986 is about 11794.7863906050. The cubic root of 139116986 is about 518.1554295729.

The spelling of 139116986 in words is "one hundred thirty-nine million, one hundred sixteen thousand, nine hundred eighty-six".