1139564 has 12 divisors (see below), whose sum is σ = 2001888. Its totient is φ = 567600.

The previous prime is 1139557. The next prime is 1139573. The reversal of 1139564 is 4659311.

It is a super-2 number, since 2×1139564² = 2597212220192, which contains 22 as substring.

It is a plaindrome in base 15.

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, 1394 + ... + 2054.

It is an arithmetic number, because the mean of its divisors is an integer number (166824).

2^1139564 is an apocalyptic number.

It is an amenable number.

1139564 is a deficient number, since it is larger than the sum of its proper divisors (862324).

1139564 is a wasteful number, since it uses less digits than its factorization.

1139564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096 (or 1094 counting only the distinct ones).

The product of its digits is 3240, while the sum is 29.

The square root of 1139564 is about 1067.5036299704. The cubic root of 1139564 is about 104.4510733013.

The spelling of 1139564 in words is "one million, one hundred thirty-nine thousand, five hundred sixty-four".