1213849 has 8 divisors (see below), whose sum is σ = 1494080. Its totient is φ = 960336.

The previous prime is 1213841. The next prime is 1213873. The reversal of 1213849 is 9483121.

It is a happy number.

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

It is not a de Polignac number, because 1213849 - 2³ = 1213841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213841) 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, 6579 + ... + 6760.

It is an arithmetic number, because the mean of its divisors is an integer number (186760).

2^1213849 is an apocalyptic number.

It is an amenable number.

1213849 is a deficient number, since it is larger than the sum of its proper divisors (280231).

1213849 is a wasteful number, since it uses less digits than its factorization.

1213849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13359.

The product of its digits is 1728, while the sum is 28.

The square root of 1213849 is about 1101.7481563406. The cubic root of 1213849 is about 106.6730931458.

Subtracting from 1213849 its product of digits (1728), we obtain a palindrome (1212121).

It can be divided in two parts, 12 and 13849, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 1213849 in words is "one million, two hundred thirteen thousand, eight hundred forty-nine".