1244649 has 12 divisors (see below), whose sum is σ = 1930704. Its totient is φ = 711144.

The previous prime is 1244647. The next prime is 1244687. The reversal of 1244649 is 9464421.

It is not a de Polignac number, because 1244649 - 2¹ = 1244647 is a prime.

It is a super-2 number, since 2×1244649² = 3098302266402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1244647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4087 + ... + 4380.

It is an arithmetic number, because the mean of its divisors is an integer number (160892).

2^1244649 is an apocalyptic number.

It is an amenable number.

1244649 is a deficient number, since it is larger than the sum of its proper divisors (686055).

1244649 is an equidigital number, since it uses as much as digits as its factorization.

1244649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8484 (or 8477 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 1244649 is about 1115.6383822727. The cubic root of 1244649 is about 107.5678029084.

It can be divided in two parts, 1 and 244649, that added together give a triangular number (244650 = T₆₉₉).

The spelling of 1244649 in words is "one million, two hundred forty-four thousand, six hundred forty-nine".