1380446047 has 4 divisors (see below), whose sum is σ = 1381296136. Its totient is φ = 1379595960.

The previous prime is 1380446029. The next prime is 1380446129. The reversal of 1380446047 is 7406440831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7406440831 = 67 ⋅110543893.

It is a cyclic number.

It is not a de Polignac number, because 1380446047 - 2⁷ = 1380445919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1380445997 and 1380446015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380446017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422604 + ... + 425857.

It is an arithmetic number, because the mean of its divisors is an integer number (345324034).

Almost surely, 2^1380446047 is an apocalyptic number.

1380446047 is a deficient number, since it is larger than the sum of its proper divisors (850089).

1380446047 is an equidigital number, since it uses as much as digits as its factorization.

1380446047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850088.

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 1380446047 is about 37154.3543477746. The cubic root of 1380446047 is about 1113.4562203649.

Adding to 1380446047 its reverse (7406440831), we get a palindrome (8786886878).

The spelling of 1380446047 in words is "one billion, three hundred eighty million, four hundred forty-six thousand, forty-seven".