1139494 has 4 divisors (see below), whose sum is σ = 1709244. Its totient is φ = 569746.

The previous prime is 1139491. The next prime is 1139503. The reversal of 1139494 is 4949311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4949311 = 131 ⋅37781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284872 + ... + 284875.

It is an arithmetic number, because the mean of its divisors is an integer number (427311).

2^1139494 is an apocalyptic number.

1139494 is a deficient number, since it is larger than the sum of its proper divisors (569750).

1139494 is an equidigital number, since it uses as much as digits as its factorization.

1139494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569749.

The product of its digits is 3888, while the sum is 31.

The square root of 1139494 is about 1067.4708426931. The cubic root of 1139494 is about 104.4489345520.

It can be divided in two parts, 11 and 39494, that multiplied together give a palindrome (434434).

The spelling of 1139494 in words is "one million, one hundred thirty-nine thousand, four hundred ninety-four".