72029189 has 2 divisors, whose sum is σ = 72029190. Its totient is φ = 72029188.

The previous prime is 72029179. The next prime is 72029201. The reversal of 72029189 is 98192027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50481025 + 21548164 = 7105^2 + 4642^2 .

It is a cyclic number.

It is not a de Polignac number, because 72029189 - 2⁸ = 72028933 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 (72029179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36014594 + 36014595.

It is an arithmetic number, because the mean of its divisors is an integer number (36014595).

Almost surely, 2^72029189 is an apocalyptic number.

It is an amenable number.

72029189 is a deficient number, since it is larger than the sum of its proper divisors (1).

72029189 is an equidigital number, since it uses as much as digits as its factorization.

72029189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 72029189 is about 8487.0011782726. The cubic root of 72029189 is about 416.0729751324.

The spelling of 72029189 in words is "seventy-two million, twenty-nine thousand, one hundred eighty-nine".