1304390793 has 16 divisors (see below), whose sum is σ = 1832578880. Its totient is φ = 822991104.

The previous prime is 1304390779. The next prime is 1304390809. The reversal of 1304390793 is 3970934031.

It is not a de Polignac number, because 1304390793 - 2⁶ = 1304390729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1304390713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47805 + ... + 69957.

It is an arithmetic number, because the mean of its divisors is an integer number (114536180).

Almost surely, 2^1304390793 is an apocalyptic number.

It is an amenable number.

1304390793 is a deficient number, since it is larger than the sum of its proper divisors (528188087).

1304390793 is a wasteful number, since it uses less digits than its factorization.

1304390793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23208.

The product of its (nonzero) digits is 61236, while the sum is 39.

The square root of 1304390793 is about 36116.3507708074. The cubic root of 1304390793 is about 1092.6202408035.

The spelling of 1304390793 in words is "one billion, three hundred four million, three hundred ninety thousand, seven hundred ninety-three".