71337449 has 2 divisors, whose sum is σ = 71337450. Its totient is φ = 71337448.

The previous prime is 71337433. The next prime is 71337481. The reversal of 71337449 is 94473317.

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., 69973225 + 1364224 = 8365^2 + 1168^2 .

It is a cyclic number.

It is not a de Polignac number, because 71337449 - 2⁴ = 71337433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71336449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35668724 + 35668725.

It is an arithmetic number, because the mean of its divisors is an integer number (35668725).

Almost surely, 2^71337449 is an apocalyptic number.

It is an amenable number.

71337449 is a deficient number, since it is larger than the sum of its proper divisors (1).

71337449 is an equidigital number, since it uses as much as digits as its factorization.

71337449 is an evil number, because the sum of its binary digits is even.

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

The square root of 71337449 is about 8446.1499513092. The cubic root of 71337449 is about 414.7367547145.

The spelling of 71337449 in words is "seventy-one million, three hundred thirty-seven thousand, four hundred forty-nine".