1304486947 has 4 divisors (see below), whose sum is σ = 1320999520. Its totient is φ = 1287974376.

The previous prime is 1304486923. The next prime is 1304486957. The reversal of 1304486947 is 7496844031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7496844031 = 3821 ⋅1962011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1304486947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1304486897 and 1304486906.

It is not an unprimeable number, because it can be changed into a prime (1304486957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8256168 + ... + 8256325.

It is an arithmetic number, because the mean of its divisors is an integer number (330249880).

Almost surely, 2^1304486947 is an apocalyptic number.

1304486947 is a deficient number, since it is larger than the sum of its proper divisors (16512573).

1304486947 is an equidigital number, since it uses as much as digits as its factorization.

1304486947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16512572.

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 1304486947 is about 36117.6819162028. The cubic root of 1304486947 is about 1092.6470878767.

The spelling of 1304486947 in words is "one billion, three hundred four million, four hundred eighty-six thousand, nine hundred forty-seven".