71894929 has 2 divisors, whose sum is σ = 71894930. Its totient is φ = 71894928.

The previous prime is 71894903. The next prime is 71894939. The reversal of 71894929 is 92949817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64883025 + 7011904 = 8055^2 + 2648^2 .

It is a cyclic number.

It is not a de Polignac number, because 71894929 - 2⁵ = 71894897 is a prime.

It is not a weakly prime, because it can be changed into another prime (71894939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35947464 + 35947465.

It is an arithmetic number, because the mean of its divisors is an integer number (35947465).

Almost surely, 2^71894929 is an apocalyptic number.

It is an amenable number.

71894929 is a deficient number, since it is larger than the sum of its proper divisors (1).

71894929 is an equidigital number, since it uses as much as digits as its factorization.

71894929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 49.

The square root of 71894929 is about 8479.0877457425. The cubic root of 71894929 is about 415.8142989731.

The spelling of 71894929 in words is "seventy-one million, eight hundred ninety-four thousand, nine hundred twenty-nine".