13958993 has 2 divisors, whose sum is σ = 13958994. Its totient is φ = 13958992.

The previous prime is 13958969. The next prime is 13959037. The reversal of 13958993 is 39985931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13897984 + 61009 = 3728^2 + 247^2 .

It is a cyclic number.

It is not a de Polignac number, because 13958993 - 2¹⁴ = 13942609 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13958093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6979496 + 6979497.

It is an arithmetic number, because the mean of its divisors is an integer number (6979497).

Almost surely, 2^13958993 is an apocalyptic number.

It is an amenable number.

13958993 is a deficient number, since it is larger than the sum of its proper divisors (1).

13958993 is an equidigital number, since it uses as much as digits as its factorization.

13958993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 262440, while the sum is 47.

The square root of 13958993 is about 3736.1735773382. The cubic root of 13958993 is about 240.7786803290.

The spelling of 13958993 in words is "thirteen million, nine hundred fifty-eight thousand, nine hundred ninety-three".