72434471 has 2 divisors, whose sum is σ = 72434472. Its totient is φ = 72434470.

The previous prime is 72434377. The next prime is 72434491. The reversal of 72434471 is 17443427.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72434471 is a prime.

It is a super-3 number, since 3×72434471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72434491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36217235 + 36217236.

It is an arithmetic number, because the mean of its divisors is an integer number (36217236).

Almost surely, 2^72434471 is an apocalyptic number.

72434471 is a deficient number, since it is larger than the sum of its proper divisors (1).

72434471 is an equidigital number, since it uses as much as digits as its factorization.

72434471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18816, while the sum is 32.

The square root of 72434471 is about 8510.8443176926. The cubic root of 72434471 is about 416.8518797562.

Adding to 72434471 its reverse (17443427), we get a palindrome (89877898).

The spelling of 72434471 in words is "seventy-two million, four hundred thirty-four thousand, four hundred seventy-one".