89457490490809 has 9 divisors (see below), whose sum is σ = 104062872077541. Its totient is φ = 76677792242940.

The previous prime is 89457490490791. The next prime is 89457490490821. The reversal of 89457490490809 is 90809409475498.

The square root of 89457490490809 is 9458197.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 89457490490809 - 2¹⁵ = 89457490458041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89457490490909) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 65531794 + ... + 66882964.

It is an arithmetic number, because the mean of its divisors is an integer number (11562541341949).

Almost surely, 2^{89457490490809} is an apocalyptic number.

89457490490809 is the 9458197-th square number.

89457490490809 is the 4729099-th centered octagonal number.

It is an amenable number.

89457490490809 is a deficient number, since it is larger than the sum of its proper divisors (14605381586732).

89457490490809 is an frugal number, since it uses more digits than its factorization.

89457490490809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702356 (or 1351178 counting only the distinct ones).

The product of its (nonzero) digits is 940584960, while the sum is 76.

The spelling of 89457490490809 in words is "eighty-nine trillion, four hundred fifty-seven billion, four hundred ninety million, four hundred ninety thousand, eight hundred nine".