85398499 has 4 divisors (see below), whose sum is σ = 85459936. Its totient is φ = 85337064.

The previous prime is 85398491. The next prime is 85398541. The reversal of 85398499 is 99489358.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85398499 - 2³ = 85398491 is a prime.

It is a super-3 number, since 3×85398499³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85398491) 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, 28584 + ... + 31429.

It is an arithmetic number, because the mean of its divisors is an integer number (21364984).

Almost surely, 2^85398499 is an apocalyptic number.

85398499 is a deficient number, since it is larger than the sum of its proper divisors (61437).

85398499 is a wasteful number, since it uses less digits than its factorization.

85398499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61436.

The product of its digits is 2799360, while the sum is 55.

The square root of 85398499 is about 9241.1308290707. The cubic root of 85398499 is about 440.3690069051.

The spelling of 85398499 in words is "eighty-five million, three hundred ninety-eight thousand, four hundred ninety-nine".