89521471 has 8 divisors (see below), whose sum is σ = 96482960. Its totient is φ = 82570752.

The previous prime is 89521469. The next prime is 89521477. The reversal of 89521471 is 17412598.

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 89521471 - 2¹ = 89521469 is a prime.

It is a super-3 number, since 3×89521471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89521471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89521477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25840 + ... + 29098.

It is an arithmetic number, because the mean of its divisors is an integer number (12060370).

Almost surely, 2^89521471 is an apocalyptic number.

89521471 is a deficient number, since it is larger than the sum of its proper divisors (6961489).

89521471 is a wasteful number, since it uses less digits than its factorization.

89521471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5385.

The product of its digits is 20160, while the sum is 37.

The square root of 89521471 is about 9461.5786737732. The cubic root of 89521471 is about 447.3448101638.

It can be divided in two parts, 895 and 21471, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 89521471 in words is "eighty-nine million, five hundred twenty-one thousand, four hundred seventy-one".