85513909 has 8 divisors (see below), whose sum is σ = 93467360. Its totient is φ = 77756976.

The previous prime is 85513907. The next prime is 85513921. The reversal of 85513909 is 90931558.

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 85513909 - 2¹ = 85513907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85513907) 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, 48219 + ... + 49960.

It is an arithmetic number, because the mean of its divisors is an integer number (11683420).

Almost surely, 2^85513909 is an apocalyptic number.

It is an amenable number.

85513909 is a deficient number, since it is larger than the sum of its proper divisors (7953451).

85513909 is a wasteful number, since it uses less digits than its factorization.

85513909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98259.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 85513909 is about 9247.3730864500. The cubic root of 85513909 is about 440.5672934102.

The spelling of 85513909 in words is "eighty-five million, five hundred thirteen thousand, nine hundred nine".