1139436 has 36 divisors (see below), whose sum is σ = 2976064. Its totient is φ = 367200.

The previous prime is 1139423. The next prime is 1139461. The reversal of 1139436 is 6349311.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 606 + ... + 1626.

2^1139436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1139436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1488032).

1139436 is an abundant number, since it is smaller than the sum of its proper divisors (1836628).

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

1139436 is a wasteful number, since it uses less digits than its factorization.

1139436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062 (or 1057 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 1139436 is about 1067.4436753291. The cubic root of 1139436 is about 104.4471623792.

The spelling of 1139436 in words is "one million, one hundred thirty-nine thousand, four hundred thirty-six".