72989629 has 2 divisors, whose sum is σ = 72989630. Its totient is φ = 72989628.

The previous prime is 72989597. The next prime is 72989677. The reversal of 72989629 is 92698927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72641529 + 348100 = 8523^2 + 590^2 .

It is a cyclic number.

It is not a de Polignac number, because 72989629 - 2⁵ = 72989597 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72989699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36494814 + 36494815.

It is an arithmetic number, because the mean of its divisors is an integer number (36494815).

Almost surely, 2^72989629 is an apocalyptic number.

It is an amenable number.

72989629 is a deficient number, since it is larger than the sum of its proper divisors (1).

72989629 is an equidigital number, since it uses as much as digits as its factorization.

72989629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 52.

The square root of 72989629 is about 8543.3968068913. The cubic root of 72989629 is about 417.9141269534.

The spelling of 72989629 in words is "seventy-two million, nine hundred eighty-nine thousand, six hundred twenty-nine".