1304406789 has 8 divisors (see below), whose sum is σ = 1987667520. Its totient is φ = 745375296.

The previous prime is 1304406781. The next prime is 1304406793. The reversal of 1304406789 is 9876044031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1304406789 - 2³ = 1304406781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1304406789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304406781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31057284 + ... + 31057325.

It is an arithmetic number, because the mean of its divisors is an integer number (248458440).

Almost surely, 2^1304406789 is an apocalyptic number.

It is an amenable number.

1304406789 is a deficient number, since it is larger than the sum of its proper divisors (683260731).

1304406789 is an equidigital number, since it uses as much as digits as its factorization.

1304406789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62114619.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 1304406789 is about 36116.5722210733. The cubic root of 1304406789 is about 1092.6247071240.

The spelling of 1304406789 in words is "one billion, three hundred four million, four hundred six thousand, seven hundred eighty-nine".