727005989 has 2 divisors, whose sum is σ = 727005990. Its totient is φ = 727005988.

The previous prime is 727005977. The next prime is 727006013. The reversal of 727005989 is 989500727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 706230625 + 20775364 = 26575^2 + 4558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-727005989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (727005889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363502994 + 363502995.

It is an arithmetic number, because the mean of its divisors is an integer number (363502995).

Almost surely, 2^727005989 is an apocalyptic number.

It is an amenable number.

727005989 is a deficient number, since it is larger than the sum of its proper divisors (1).

727005989 is an equidigital number, since it uses as much as digits as its factorization.

727005989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 727005989 is about 26963.0485850543. The cubic root of 727005989 is about 899.1786700330.

The spelling of 727005989 in words is "seven hundred twenty-seven million, five thousand, nine hundred eighty-nine".