10399993 has 2 divisors, whose sum is σ = 10399994. Its totient is φ = 10399992.

The previous prime is 10399981. The next prime is 10400021. The reversal of 10399993 is 39999301.

10399993 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8363664 + 2036329 = 2892^2 + 1427^2 .

It is an emirp because it is prime and its reverse (39999301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10399993 is a prime.

It is not a weakly prime, because it can be changed into another prime (10399693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5199996 + 5199997.

It is an arithmetic number, because the mean of its divisors is an integer number (5199997).

Almost surely, 2^10399993 is an apocalyptic number.

It is an amenable number.

10399993 is a deficient number, since it is larger than the sum of its proper divisors (1).

10399993 is an equidigital number, since it uses as much as digits as its factorization.

10399993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 59049, while the sum is 43.

The square root of 10399993 is about 3224.9020140153. The cubic root of 10399993 is about 218.2785276395.

The spelling of 10399993 in words is "ten million, three hundred ninety-nine thousand, nine hundred ninety-three".