1444390 has 8 divisors (see below), whose sum is σ = 2599920. Its totient is φ = 577752.

The previous prime is 1444309. The next prime is 1444411. The reversal of 1444390 is 934441.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72210 + ... + 72229.

It is an arithmetic number, because the mean of its divisors is an integer number (324990).

2^1444390 is an apocalyptic number.

1444390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1444390 is a deficient number, since it is larger than the sum of its proper divisors (1155530).

1444390 is a wasteful number, since it uses less digits than its factorization.

1444390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144446.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1444390 is about 1201.8277746832. The cubic root of 1444390 is about 113.0389611650.

The spelling of 1444390 in words is "one million, four hundred forty-four thousand, three hundred ninety".