1138986 has 12 divisors (see below), whose sum is σ = 2467842. Its totient is φ = 379656.

The previous prime is 1138979. The next prime is 1138987. The reversal of 1138986 is 6898311.

It can be written as a sum of positive squares in only one way, i.e., 1134225 + 4761 = 1065^2 + 69^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1138986.

It is not an unprimeable number, because it can be changed into a prime (1138987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31621 + ... + 31656.

2^1138986 is an apocalyptic number.

1138986 is an abundant number, since it is smaller than the sum of its proper divisors (1328856).

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

1138986 is a wasteful number, since it uses less digits than its factorization.

1138986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63285 (or 63282 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 1138986 is about 1067.2328705582. The cubic root of 1138986 is about 104.4334107185.

The spelling of 1138986 in words is "one million, one hundred thirty-eight thousand, nine hundred eighty-six".