1244991 has 16 divisors (see below), whose sum is σ = 1870848. Its totient is φ = 729600.

The previous prime is 1244989. The next prime is 1244993. The reversal of 1244991 is 1994421.

It is an interprime number because it is at equal distance from previous prime (1244989) and next prime (1244993).

It is not a de Polignac number, because 1244991 - 2¹ = 1244989 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415 + ... + 1631.

It is an arithmetic number, because the mean of its divisors is an integer number (116928).

2^1244991 is an apocalyptic number.

1244991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1244991 is a deficient number, since it is larger than the sum of its proper divisors (625857).

1244991 is a wasteful number, since it uses less digits than its factorization.

1244991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262.

The product of its digits is 2592, while the sum is 30.

The square root of 1244991 is about 1115.7916472173. The cubic root of 1244991 is about 107.5776543657.

It can be divided in two parts, 124 and 4991, that added together give a palindrome (5115).

The spelling of 1244991 in words is "one million, two hundred forty-four thousand, nine hundred ninety-one".