85429889 has 8 divisors (see below), whose sum is σ = 90274560. Its totient is φ = 80679456.

The previous prime is 85429873. The next prime is 85429919. The reversal of 85429889 is 98892458.

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 85429889 - 2⁴ = 85429873 is a prime.

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 85429889.

It is not an unprimeable number, because it can be changed into a prime (85429819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21692 + ... + 25325.

It is an arithmetic number, because the mean of its divisors is an integer number (11284320).

Almost surely, 2^85429889 is an apocalyptic number.

It is an amenable number.

85429889 is a deficient number, since it is larger than the sum of its proper divisors (4844671).

85429889 is a wasteful number, since it uses less digits than its factorization.

85429889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47119.

The product of its digits is 1658880, while the sum is 53.

The square root of 85429889 is about 9242.8290582483. The cubic root of 85429889 is about 440.4229559010.

The spelling of 85429889 in words is "eighty-five million, four hundred twenty-nine thousand, eight hundred eighty-nine".