71411993 has 2 divisors, whose sum is σ = 71411994. Its totient is φ = 71411992.

The previous prime is 71411981. The next prime is 71411999. The reversal of 71411993 is 39911417.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57957769 + 13454224 = 7613^2 + 3668^2 .

It is a cyclic number.

It is not a de Polignac number, because 71411993 - 2⁶ = 71411929 is a prime.

It is a super-3 number, since 3×71411993³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71411999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35705996 + 35705997.

It is an arithmetic number, because the mean of its divisors is an integer number (35705997).

Almost surely, 2^71411993 is an apocalyptic number.

It is an amenable number.

71411993 is a deficient number, since it is larger than the sum of its proper divisors (1).

71411993 is an equidigital number, since it uses as much as digits as its factorization.

71411993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 35.

The square root of 71411993 is about 8450.5616973075. The cubic root of 71411993 is about 414.8811640195.

The spelling of 71411993 in words is "seventy-one million, four hundred eleven thousand, nine hundred ninety-three".