1447890473 has 4 divisors (see below), whose sum is σ = 1447970688. Its totient is φ = 1447810260.

The previous prime is 1447890461. The next prime is 1447890547. The reversal of 1447890473 is 3740987441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1447890473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1447890443) 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, 1040 + ... + 53822.

It is an arithmetic number, because the mean of its divisors is an integer number (361992672).

Almost surely, 2^1447890473 is an apocalyptic number.

It is an amenable number.

1447890473 is a deficient number, since it is larger than the sum of its proper divisors (80215).

1447890473 is an equidigital number, since it uses as much as digits as its factorization.

1447890473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80214.

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 1447890473 is about 38051.1560008366. The cubic root of 1447890473 is about 1131.3020397578.

The spelling of 1447890473 in words is "one billion, four hundred forty-seven million, eight hundred ninety thousand, four hundred seventy-three".