71849923 has 2 divisors, whose sum is σ = 71849924. Its totient is φ = 71849922.

The previous prime is 71849903. The next prime is 71849957. The reversal of 71849923 is 32994817.

It is a weak prime.

It is an emirp because it is prime and its reverse (32994817) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71849923 - 2⁵ = 71849891 is a prime.

It is a super-2 number, since 2×71849923² = 10324822870211858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71849923.

It is not a weakly prime, because it can be changed into another prime (71849903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35924961 + 35924962.

It is an arithmetic number, because the mean of its divisors is an integer number (35924962).

Almost surely, 2^71849923 is an apocalyptic number.

71849923 is a deficient number, since it is larger than the sum of its proper divisors (1).

71849923 is an equidigital number, since it uses as much as digits as its factorization.

71849923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 71849923 is about 8476.4333891089. The cubic root of 71849923 is about 415.7275147128.

The spelling of 71849923 in words is "seventy-one million, eight hundred forty-nine thousand, nine hundred twenty-three".