71449337 has 2 divisors, whose sum is σ = 71449338. Its totient is φ = 71449336.

The previous prime is 71449307. The next prime is 71449379. The reversal of 71449337 is 73394417.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51208336 + 20241001 = 7156^2 + 4499^2 .

It is a cyclic number.

It is not a de Polignac number, because 71449337 - 2¹⁴ = 71432953 is a prime.

It is equal to p_4198286 and since 71449337 and 4198286 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71449337.

It is not a weakly prime, because it can be changed into another prime (71449307) 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, 35724668 + 35724669.

It is an arithmetic number, because the mean of its divisors is an integer number (35724669).

Almost surely, 2^71449337 is an apocalyptic number.

It is an amenable number.

71449337 is a deficient number, since it is larger than the sum of its proper divisors (1).

71449337 is an equidigital number, since it uses as much as digits as its factorization.

71449337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 38.

The square root of 71449337 is about 8452.7709657839. The cubic root of 71449337 is about 414.9534703724.

The spelling of 71449337 in words is "seventy-one million, four hundred forty-nine thousand, three hundred thirty-seven".