71949743 has 2 divisors, whose sum is σ = 71949744. Its totient is φ = 71949742.

The previous prime is 71949679. The next prime is 71949781. The reversal of 71949743 is 34794917.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71949743 - 2⁶ = 71949679 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71949694 and 71949703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71949343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35974871 + 35974872.

It is an arithmetic number, because the mean of its divisors is an integer number (35974872).

Almost surely, 2^71949743 is an apocalyptic number.

71949743 is a deficient number, since it is larger than the sum of its proper divisors (1).

71949743 is an equidigital number, since it uses as much as digits as its factorization.

71949743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 71949743 is about 8482.3194351545. The cubic root of 71949743 is about 415.9199469203.

The spelling of 71949743 in words is "seventy-one million, nine hundred forty-nine thousand, seven hundred forty-three".