1139850 has 72 divisors (see below), whose sum is σ = 3264300. Its totient is φ = 284160.

The previous prime is 1139849. The next prime is 1139851. The reversal of 1139850 is 589311.

It is an interprime number because it is at equal distance from previous prime (1139849) and next prime (1139851).

It can be written as a sum of positive squares in 6 ways, for example, as 335241 + 804609 = 579^2 + 897^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139851) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7576 + ... + 7724.

2^1139850 is an apocalyptic number.

1139850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1139850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1632150).

1139850 is an abundant number, since it is smaller than the sum of its proper divisors (2124450).

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

1139850 is a wasteful number, since it uses less digits than its factorization.

1139850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1139850 is about 1067.6375789565. The cubic root of 1139850 is about 104.4598107097.

The spelling of 1139850 in words is "one million, one hundred thirty-nine thousand, eight hundred fifty".