69441649 has 2 divisors, whose sum is σ = 69441650. Its totient is φ = 69441648.

The previous prime is 69441527. The next prime is 69441653. The reversal of 69441649 is 94614496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63091249 + 6350400 = 7943^2 + 2520^2 .

It is a cyclic number.

It is not a de Polignac number, because 69441649 - 2⁷ = 69441521 is a prime.

It is not a weakly prime, because it can be changed into another prime (69441049) 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, 34720824 + 34720825.

It is an arithmetic number, because the mean of its divisors is an integer number (34720825).

Almost surely, 2^69441649 is an apocalyptic number.

It is an amenable number.

69441649 is a deficient number, since it is larger than the sum of its proper divisors (1).

69441649 is an equidigital number, since it uses as much as digits as its factorization.

69441649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 43.

The square root of 69441649 is about 8333.1656049787. The cubic root of 69441649 is about 411.0298303207.

The spelling of 69441649 in words is "sixty-nine million, four hundred forty-one thousand, six hundred forty-nine".