1296849 has 8 divisors (see below), whose sum is σ = 1736640. Its totient is φ = 860816.

The previous prime is 1296839. The next prime is 1296877. The reversal of 1296849 is 9486921.

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 1296849 - 2⁴ = 1296833 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1296829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4 + ... + 1610.

It is an arithmetic number, because the mean of its divisors is an integer number (217080).

2^1296849 is an apocalyptic number.

It is an amenable number.

1296849 is a deficient number, since it is larger than the sum of its proper divisors (439791).

1296849 is a wasteful number, since it uses less digits than its factorization.

1296849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879.

The product of its digits is 31104, while the sum is 39.

The square root of 1296849 is about 1138.7927818528. The cubic root of 1296849 is about 109.0510380179.

It can be divided in two parts, 1296 and 849, that added together give a triangular number (2145 = T₆₅).

The spelling of 1296849 in words is "one million, two hundred ninety-six thousand, eight hundred forty-nine".