1139663 has 16 divisors (see below), whose sum is σ = 1410624. Its totient is φ = 898560.

The previous prime is 1139623. The next prime is 1139669. The reversal of 1139663 is 3669311.

1139663 = T₁₆₂ + T₁₆₃ + ... + T₂₂₂.

It is a cyclic number.

It is not a de Polignac number, because 1139663 - 2⁸ = 1139407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7181 + ... + 7337.

It is an arithmetic number, because the mean of its divisors is an integer number (88164).

2^1139663 is an apocalyptic number.

1139663 is a deficient number, since it is larger than the sum of its proper divisors (270961).

1139663 is a wasteful number, since it uses less digits than its factorization.

1139663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242.

The product of its digits is 2916, while the sum is 29.

The square root of 1139663 is about 1067.5499988291. The cubic root of 1139663 is about 104.4540979542.

The spelling of 1139663 in words is "one million, one hundred thirty-nine thousand, six hundred sixty-three".