71449783 has 2 divisors, whose sum is σ = 71449784. Its totient is φ = 71449782.

The previous prime is 71449771. The next prime is 71449811. The reversal of 71449783 is 38794417.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71449783 - 2⁵ = 71449751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71443783) 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, 35724891 + 35724892.

It is an arithmetic number, because the mean of its divisors is an integer number (35724892).

Almost surely, 2^71449783 is an apocalyptic number.

71449783 is a deficient number, since it is larger than the sum of its proper divisors (1).

71449783 is an equidigital number, since it uses as much as digits as its factorization.

71449783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The square root of 71449783 is about 8452.7973476240. The cubic root of 71449783 is about 414.9543337761.

The spelling of 71449783 in words is "seventy-one million, four hundred forty-nine thousand, seven hundred eighty-three".