69444913 has 2 divisors, whose sum is σ = 69444914. Its totient is φ = 69444912.

The previous prime is 69444911. The next prime is 69444917. The reversal of 69444913 is 31944496.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49660209 + 19784704 = 7047^2 + 4448^2 .

It is a cyclic number.

It is not a de Polignac number, because 69444913 - 2¹ = 69444911 is a prime.

Together with 69444911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (69444911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34722456 + 34722457.

It is an arithmetic number, because the mean of its divisors is an integer number (34722457).

Almost surely, 2^69444913 is an apocalyptic number.

It is an amenable number.

69444913 is a deficient number, since it is larger than the sum of its proper divisors (1).

69444913 is an equidigital number, since it uses as much as digits as its factorization.

69444913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 40.

The square root of 69444913 is about 8333.3614466192. The cubic root of 69444913 is about 411.0362701656.

The spelling of 69444913 in words is "sixty-nine million, four hundred forty-four thousand, nine hundred thirteen".