1139866 has 16 divisors (see below), whose sum is σ = 2104704. Its totient is φ = 450864.

The previous prime is 1139863. The next prime is 1139869. The reversal of 1139866 is 6689311.

It is an interprime number because it is at equal distance from previous prime (1139863) and next prime (1139869).

It is not an unprimeable number, because it can be changed into a prime (1139861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2950 + ... + 3313.

It is an arithmetic number, because the mean of its divisors is an integer number (131544).

2^1139866 is an apocalyptic number.

1139866 is a deficient number, since it is larger than the sum of its proper divisors (964838).

1139866 is a wasteful number, since it uses less digits than its factorization.

1139866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6285.

The product of its digits is 7776, while the sum is 34.

The square root of 1139866 is about 1067.6450721096. The cubic root of 1139866 is about 104.4602994725.

The spelling of 1139866 in words is "one million, one hundred thirty-nine thousand, eight hundred sixty-six".