1139345 has 4 divisors (see below), whose sum is σ = 1367220. Its totient is φ = 911472.

The previous prime is 1139329. The next prime is 1139353. The reversal of 1139345 is 5439311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5439311 = 137 ⋅39703.

It can be written as a sum of positive squares in 2 ways, for example, as 173056 + 966289 = 416^2 + 983^2 .

It is a cyclic number.

It is not a de Polignac number, because 1139345 - 2⁴ = 1139329 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113930 + ... + 113939.

It is an arithmetic number, because the mean of its divisors is an integer number (341805).

2^1139345 is an apocalyptic number.

It is an amenable number.

1139345 is a deficient number, since it is larger than the sum of its proper divisors (227875).

1139345 is an equidigital number, since it uses as much as digits as its factorization.

1139345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227874.

The product of its digits is 1620, while the sum is 26.

The square root of 1139345 is about 1067.4010492781. The cubic root of 1139345 is about 104.4443817799. Note that the first 3 decimals are identical.

The spelling of 1139345 in words is "one million, one hundred thirty-nine thousand, three hundred forty-five".