71441997 has 16 divisors (see below), whose sum is σ = 104094720. Its totient is φ = 43223600.

The previous prime is 71441989. The next prime is 71441999. The reversal of 71441997 is 79914417.

It is a cyclic number.

It is not a de Polignac number, because 71441997 - 2³ = 71441989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71441999) 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 in 15 ways as a sum of consecutive naturals, for example, 22222 + ... + 25232.

It is an arithmetic number, because the mean of its divisors is an integer number (6505920).

Almost surely, 2^71441997 is an apocalyptic number.

It is an amenable number.

71441997 is a deficient number, since it is larger than the sum of its proper divisors (32652723).

71441997 is a wasteful number, since it uses less digits than its factorization.

71441997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3744.

The product of its digits is 63504, while the sum is 42.

The square root of 71441997 is about 8452.3367774835. The cubic root of 71441997 is about 414.9392604772.

The spelling of 71441997 in words is "seventy-one million, four hundred forty-one thousand, nine hundred ninety-seven".