85398911 has 6 divisors (see below), whose sum is σ = 92473560. Its totient is φ = 78829608.

The previous prime is 85398899. The next prime is 85398913. The reversal of 85398911 is 11989358.

It is a happy number.

It is not a de Polignac number, because 85398911 - 2¹⁴ = 85382527 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 (85398913) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 252491 + ... + 252828.

It is an arithmetic number, because the mean of its divisors is an integer number (15412260).

Almost surely, 2^85398911 is an apocalyptic number.

85398911 is a deficient number, since it is larger than the sum of its proper divisors (7074649).

85398911 is a wasteful number, since it uses less digits than its factorization.

85398911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505345 (or 505332 counting only the distinct ones).

The product of its digits is 77760, while the sum is 44.

The square root of 85398911 is about 9241.1531206879. The cubic root of 85398911 is about 440.3697150821.

The spelling of 85398911 in words is "eighty-five million, three hundred ninety-eight thousand, nine hundred eleven".