69038993 has 2 divisors, whose sum is σ = 69038994. Its totient is φ = 69038992.

The previous prime is 69038971. The next prime is 69039041. The reversal of 69038993 is 39983096.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69022864 + 16129 = 8308^2 + 127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69038993 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (69038923) 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, 34519496 + 34519497.

It is an arithmetic number, because the mean of its divisors is an integer number (34519497).

Almost surely, 2^69038993 is an apocalyptic number.

It is an amenable number.

69038993 is a deficient number, since it is larger than the sum of its proper divisors (1).

69038993 is an equidigital number, since it uses as much as digits as its factorization.

69038993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 69038993 is about 8308.9706342001. The cubic root of 69038993 is about 410.2338404306.

The spelling of 69038993 in words is "sixty-nine million, thirty-eight thousand, nine hundred ninety-three".