1447378879 has 4 divisors (see below), whose sum is σ = 1452493576. Its totient is φ = 1442264184.

The previous prime is 1447378873. The next prime is 1447378901. The reversal of 1447378879 is 9788737441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1447378879 - 2⁹ = 1447378367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1447378873) 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, 2556924 + ... + 2557489.

It is an arithmetic number, because the mean of its divisors is an integer number (363123394).

Almost surely, 2^1447378879 is an apocalyptic number.

1447378879 is a deficient number, since it is larger than the sum of its proper divisors (5114697).

1447378879 is an equidigital number, since it uses as much as digits as its factorization.

1447378879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5114696.

The product of its digits is 9483264, while the sum is 58.

The square root of 1447378879 is about 38044.4329567415. The cubic root of 1447378879 is about 1131.1687802499.

The spelling of 1447378879 in words is "one billion, four hundred forty-seven million, three hundred seventy-eight thousand, eight hundred seventy-nine".