1139388 has 12 divisors (see below), whose sum is σ = 2658600. Its totient is φ = 379792.

The previous prime is 1139387. The next prime is 1139393. The reversal of 1139388 is 8839311.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×1139388³ = 4437477645333777216, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47463 + ... + 47486.

It is an arithmetic number, because the mean of its divisors is an integer number (221550).

2^1139388 is an apocalyptic number.

It is an amenable number.

1139388 is an abundant number, since it is smaller than the sum of its proper divisors (1519212).

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

1139388 is a wasteful number, since it uses less digits than its factorization.

1139388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94956 (or 94954 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 1139388 is about 1067.4211914704. The cubic root of 1139388 is about 104.4456957079.

The spelling of 1139388 in words is "one million, one hundred thirty-nine thousand, three hundred eighty-eight".