1329749 has 8 divisors (see below), whose sum is σ = 1370880. Its totient is φ = 1289376.

The previous prime is 1329733. The next prime is 1329761. The reversal of 1329749 is 9479231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1329749 - 2⁴ = 1329733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5852 + ... + 6074.

It is an arithmetic number, because the mean of its divisors is an integer number (171360).

2^1329749 is an apocalyptic number.

It is an amenable number.

1329749 is a deficient number, since it is larger than the sum of its proper divisors (41131).

1329749 is an equidigital number, since it uses as much as digits as its factorization.

1329749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379.

The product of its digits is 13608, while the sum is 35.

The square root of 1329749 is about 1153.1474320311. The cubic root of 1329749 is about 109.9655263873.

The spelling of 1329749 in words is "one million, three hundred twenty-nine thousand, seven hundred forty-nine".