85464289 has 4 divisors (see below), whose sum is σ = 86079280. Its totient is φ = 84849300.

The previous prime is 85464271. The next prime is 85464293. The reversal of 85464289 is 98246458.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98246458 = 2 ⋅49123229.

It is a cyclic number.

It is not a de Polignac number, because 85464289 - 2⁵ = 85464257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85464689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307287 + ... + 307564.

It is an arithmetic number, because the mean of its divisors is an integer number (21519820).

Almost surely, 2^85464289 is an apocalyptic number.

It is an amenable number.

85464289 is a deficient number, since it is larger than the sum of its proper divisors (614991).

85464289 is a wasteful number, since it uses less digits than its factorization.

85464289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614990.

The product of its digits is 552960, while the sum is 46.

The square root of 85464289 is about 9244.6897730535. The cubic root of 85464289 is about 440.4820629136.

The spelling of 85464289 in words is "eighty-five million, four hundred sixty-four thousand, two hundred eighty-nine".