71849423 has 2 divisors, whose sum is σ = 71849424. Its totient is φ = 71849422.

The previous prime is 71849419. The next prime is 71849543. The reversal of 71849423 is 32494817.

It is a weak prime.

It is an emirp because it is prime and its reverse (32494817) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71849423 - 2² = 71849419 is a prime.

It is a super-3 number, since 3×71849423³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71849923) 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, 35924711 + 35924712.

It is an arithmetic number, because the mean of its divisors is an integer number (35924712).

Almost surely, 2^71849423 is an apocalyptic number.

71849423 is a deficient number, since it is larger than the sum of its proper divisors (1).

71849423 is an equidigital number, since it uses as much as digits as its factorization.

71849423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 71849423 is about 8476.4038955208. The cubic root of 71849423 is about 415.7265503683.

The spelling of 71849423 in words is "seventy-one million, eight hundred forty-nine thousand, four hundred twenty-three".