85033009 has 4 divisors (see below), whose sum is σ = 85478400. Its totient is φ = 84587620.

The previous prime is 85032949. The next prime is 85033019. The reversal of 85033009 is 90033058.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 85033009 - 2⁷ = 85032881 is a prime.

It is a super-2 number, since 2×85033009² = 14461225239188162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85033019) 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, 222409 + ... + 222790.

It is an arithmetic number, because the mean of its divisors is an integer number (21369600).

Almost surely, 2^85033009 is an apocalyptic number.

It is an amenable number.

85033009 is a deficient number, since it is larger than the sum of its proper divisors (445391).

85033009 is a wasteful number, since it uses less digits than its factorization.

85033009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445390.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 85033009 is about 9221.3344478985. The cubic root of 85033009 is about 439.7398755168.

The spelling of 85033009 in words is "eighty-five million, thirty-three thousand, nine".