72386429 has 2 divisors, whose sum is σ = 72386430. Its totient is φ = 72386428.

The previous prime is 72386399. The next prime is 72386477. The reversal of 72386429 is 92468327.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69139225 + 3247204 = 8315^2 + 1802^2 .

It is a cyclic number.

It is not a de Polignac number, because 72386429 - 2⁸ = 72386173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72386729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36193214 + 36193215.

It is an arithmetic number, because the mean of its divisors is an integer number (36193215).

Almost surely, 2^72386429 is an apocalyptic number.

It is an amenable number.

72386429 is a deficient number, since it is larger than the sum of its proper divisors (1).

72386429 is an equidigital number, since it uses as much as digits as its factorization.

72386429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 72386429 is about 8508.0214503726. The cubic root of 72386429 is about 416.7597006834.

The spelling of 72386429 in words is "seventy-two million, three hundred eighty-six thousand, four hundred twenty-nine".