71089429 has 2 divisors, whose sum is σ = 71089430. Its totient is φ = 71089428.

The previous prime is 71089399. The next prime is 71089471. The reversal of 71089429 is 92498017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60996100 + 10093329 = 7810^2 + 3177^2 .

It is a cyclic number.

It is not a de Polignac number, because 71089429 - 2⁵ = 71089397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71089391 and 71089400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71089229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35544714 + 35544715.

It is an arithmetic number, because the mean of its divisors is an integer number (35544715).

Almost surely, 2^71089429 is an apocalyptic number.

It is an amenable number.

71089429 is a deficient number, since it is larger than the sum of its proper divisors (1).

71089429 is an equidigital number, since it uses as much as digits as its factorization.

71089429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 71089429 is about 8431.4547380627. The cubic root of 71089429 is about 414.2555560800.

The spelling of 71089429 in words is "seventy-one million, eighty-nine thousand, four hundred twenty-nine".