1244990 has 16 divisors (see below), whose sum is σ = 2338848. Its totient is φ = 476256.

The previous prime is 1244989. The next prime is 1244993. The reversal of 1244990 is 994421.

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 7 ways as a sum of consecutive naturals, for example, 2477 + ... + 2936.

It is an arithmetic number, because the mean of its divisors is an integer number (146178).

2^1244990 is an apocalyptic number.

1244990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1244990 is a deficient number, since it is larger than the sum of its proper divisors (1093858).

1244990 is a wasteful number, since it uses less digits than its factorization.

1244990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5443.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1244990 is about 1115.7911991049. The cubic root of 1244990 is about 107.5776255629.

The spelling of 1244990 in words is "one million, two hundred forty-four thousand, nine hundred ninety".