1375444 has 12 divisors (see below), whose sum is σ = 2750944. Its totient is φ = 589464.

The previous prime is 1375433. The next prime is 1375457. The reversal of 1375444 is 4445731.

1375444 is an admirable number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 49123 = 1375444 / (1 + 3 + 7 + 5 + 4 + 4 + 4).

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, 24534 + ... + 24589.

2^1375444 is an apocalyptic number.

1375444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1375444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1375444 is a wasteful number, since it uses less digits than its factorization.

1375444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49134 (or 49132 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 1375444 is about 1172.7932469110. The cubic root of 1375444 is about 111.2109722969.

It can be divided in two parts, 13 and 75444, that added together give a palindrome (75457).

The spelling of 1375444 in words is "one million, three hundred seventy-five thousand, four hundred forty-four".