11389986 has 12 divisors (see below), whose sum is σ = 24678342. Its totient is φ = 3796656.

The previous prime is 11389979. The next prime is 11389997. The reversal of 11389986 is 68998311.

11389986 = T₉₀₅ + T₉₀₆ + ... + T₉₃₁.

It can be written as a sum of positive squares in only one way, i.e., 10439361 + 950625 = 3231^2 + 975^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 316371 + ... + 316406.

Almost surely, 2^11389986 is an apocalyptic number.

11389986 is an abundant number, since it is smaller than the sum of its proper divisors (13288356).

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

11389986 is a wasteful number, since it uses less digits than its factorization.

11389986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632785 (or 632782 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 11389986 is about 3374.9053320056. The cubic root of 11389986 is about 224.9957925139.

The spelling of 11389986 in words is "eleven million, three hundred eighty-nine thousand, nine hundred eighty-six".