89274866521 has 9 divisors (see below), whose sum is σ = 90536682429. Its totient is φ = 88030410336.

The previous prime is 89274866503. The next prime is 89274866539. The reversal of 89274866521 is 12566847298.

The square root of 89274866521 is 298789.

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

It is an interprime number because it is at equal distance from previous prime (89274866503) and next prime (89274866539).

It can be written as a sum of positive squares in 4 ways, for example, as 29278921 + 89245587600 = 5411^2 + 298740^2 .

It is not a de Polignac number, because 89274866521 - 2¹¹ = 89274864473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89274866581) 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, 21809551 + ... + 21813643.

It is an arithmetic number, because the mean of its divisors is an integer number (10059631381).

Almost surely, 2^89274866521 is an apocalyptic number.

89274866521 is the 298789-th square number.

89274866521 is the 149395-th centered octagonal number.

It is an amenable number.

89274866521 is a deficient number, since it is larger than the sum of its proper divisors (1261815908).

89274866521 is an frugal number, since it uses more digits than its factorization.

89274866521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8332 (or 4166 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 58.

The spelling of 89274866521 in words is "eighty-nine billion, two hundred seventy-four million, eight hundred sixty-six thousand, five hundred twenty-one".