1380447 has 12 divisors (see below), whose sum is σ = 2008344. Its totient is φ = 913680.

The previous prime is 1380443. The next prime is 1380469. The reversal of 1380447 is 7440831.

It is not a de Polignac number, because 1380447 - 2² = 1380443 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1380447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 997 + ... + 1937.

It is an arithmetic number, because the mean of its divisors is an integer number (167362).

2^1380447 is an apocalyptic number.

1380447 is a deficient number, since it is larger than the sum of its proper divisors (627897).

1380447 is a wasteful number, since it uses less digits than its factorization.

1380447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110 (or 1107 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1380447 is about 1174.9242528776. The cubic root of 1380447 is about 111.3456476592.

The spelling of 1380447 in words is "one million, three hundred eighty thousand, four hundred forty-seven".