1400444 has 6 divisors (see below), whose sum is σ = 2450784. Its totient is φ = 700220.

The previous prime is 1400423. The next prime is 1400449. The reversal of 1400444 is 4440041.

It is a super-2 number, since 2×1400444² = 3922486794272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175052 + ... + 175059.

It is an arithmetic number, because the mean of its divisors is an integer number (408464).

2^1400444 is an apocalyptic number.

It is an amenable number.

1400444 is a deficient number, since it is larger than the sum of its proper divisors (1050340).

1400444 is a wasteful number, since it uses less digits than its factorization.

1400444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350115 (or 350113 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1400444 is about 1183.4035659909. The cubic root of 1400444 is about 111.8807190984.

Adding to 1400444 its reverse (4440041), we get a palindrome (5840485).

The spelling of 1400444 in words is "one million, four hundred thousand, four hundred forty-four".