1307993 has 2 divisors, whose sum is σ = 1307994. Its totient is φ = 1307992.

The previous prime is 1307981. The next prime is 1308011. The reversal of 1307993 is 3997031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1281424 + 26569 = 1132^2 + 163^2 .

It is a cyclic number.

It is not a de Polignac number, because 1307993 - 2¹⁶ = 1242457 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1307923) 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 as a sum of consecutive naturals, namely, 653996 + 653997.

It is an arithmetic number, because the mean of its divisors is an integer number (653997).

2^1307993 is an apocalyptic number.

It is an amenable number.

1307993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1307993 is an equidigital number, since it uses as much as digits as its factorization.

1307993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 1307993 is about 1143.6752161344. The cubic root of 1307993 is about 109.3625110094.

The spelling of 1307993 in words is "one million, three hundred seven thousand, nine hundred ninety-three".