1304249993 has 2 divisors, whose sum is σ = 1304249994. Its totient is φ = 1304249992.

The previous prime is 1304249971. The next prime is 1304250019. The reversal of 1304249993 is 3999424031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 772117369 + 532132624 = 27787^2 + 23068^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304249993 - 2²² = 1300055689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1304245993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652124996 + 652124997.

It is an arithmetic number, because the mean of its divisors is an integer number (652124997).

Almost surely, 2^1304249993 is an apocalyptic number.

It is an amenable number.

1304249993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304249993 is an equidigital number, since it uses as much as digits as its factorization.

1304249993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 1304249993 is about 36114.4014625745. The cubic root of 1304249993 is about 1092.5809257796.

The spelling of 1304249993 in words is "one billion, three hundred four million, two hundred forty-nine thousand, nine hundred ninety-three".