717404989 has 8 divisors (see below), whose sum is σ = 820058240. Its totient is φ = 614793456.

The previous prime is 717404969. The next prime is 717404999. The reversal of 717404989 is 989404717.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 717404989 - 2⁷ = 717404861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (717404959) 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 in 7 ways as a sum of consecutive naturals, for example, 49072 + ... + 61990.

It is an arithmetic number, because the mean of its divisors is an integer number (102507280).

Almost surely, 2^717404989 is an apocalyptic number.

It is an amenable number.

717404989 is a deficient number, since it is larger than the sum of its proper divisors (102653251).

717404989 is a wasteful number, since it uses less digits than its factorization.

717404989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20859.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 717404989 is about 26784.4169061042. The cubic root of 717404989 is about 895.2028665318.

It can be divided in two parts, 71740 and 4989, that added together give a square (76729 = 277²).

The spelling of 717404989 in words is "seven hundred seventeen million, four hundred four thousand, nine hundred eighty-nine".