727988117 has 2 divisors, whose sum is σ = 727988118. Its totient is φ = 727988116.

The previous prime is 727988099. The next prime is 727988143. The reversal of 727988117 is 711889727.

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., 556535281 + 171452836 = 23591^2 + 13094^2 .

It is a cyclic number.

It is not a de Polignac number, because 727988117 - 2¹² = 727984021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (727988147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363994058 + 363994059.

It is an arithmetic number, because the mean of its divisors is an integer number (363994059).

Almost surely, 2^727988117 is an apocalyptic number.

It is an amenable number.

727988117 is a deficient number, since it is larger than the sum of its proper divisors (1).

727988117 is an equidigital number, since it uses as much as digits as its factorization.

727988117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 395136, while the sum is 50.

The square root of 727988117 is about 26981.2549189247. The cubic root of 727988117 is about 899.5833944279.

The spelling of 727988117 in words is "seven hundred twenty-seven million, nine hundred eighty-eight thousand, one hundred seventeen".