1339749 has 6 divisors (see below), whose sum is σ = 1935206. Its totient is φ = 893160.

The previous prime is 1339729. The next prime is 1339759. The reversal of 1339749 is 9479331.

It can be written as a sum of positive squares in only one way, i.e., 842724 + 497025 = 918^2 + 705^2 .

It is not a de Polignac number, because 1339749 - 2¹¹ = 1337701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74422 + ... + 74439.

2^1339749 is an apocalyptic number.

It is an amenable number.

1339749 is a deficient number, since it is larger than the sum of its proper divisors (595457).

1339749 is a wasteful number, since it uses less digits than its factorization.

1339749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148867 (or 148864 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 1339749 is about 1157.4752697142. The cubic root of 1339749 is about 110.2404931102.

The spelling of 1339749 in words is "one million, three hundred thirty-nine thousand, seven hundred forty-nine".