71992849 has 2 divisors, whose sum is σ = 71992850. Its totient is φ = 71992848.

The previous prime is 71992799. The next prime is 71992859. The reversal of 71992849 is 94829917.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58982400 + 13010449 = 7680^2 + 3607^2 .

It is a cyclic number.

It is not a de Polignac number, because 71992849 - 2¹⁵ = 71960081 is a prime.

It is not a weakly prime, because it can be changed into another prime (71992859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35996424 + 35996425.

It is an arithmetic number, because the mean of its divisors is an integer number (35996425).

Almost surely, 2^71992849 is an apocalyptic number.

It is an amenable number.

71992849 is a deficient number, since it is larger than the sum of its proper divisors (1).

71992849 is an equidigital number, since it uses as much as digits as its factorization.

71992849 is an odious number, because the sum of its binary digits is odd.

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

The square root of 71992849 is about 8484.8599870593. The cubic root of 71992849 is about 416.0029913031.

The spelling of 71992849 in words is "seventy-one million, nine hundred ninety-two thousand, eight hundred forty-nine".