85419679 has 4 divisors (see below), whose sum is σ = 90444384. Its totient is φ = 80394976.

The previous prime is 85419673. The next prime is 85419683. The reversal of 85419679 is 97691458.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97691458 = 2 ⋅48845729.

It is a cyclic number.

It is not a de Polignac number, because 85419679 - 2³ = 85419671 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 (85419671) 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, 2512327 + ... + 2512360.

It is an arithmetic number, because the mean of its divisors is an integer number (22611096).

Almost surely, 2^85419679 is an apocalyptic number.

85419679 is a deficient number, since it is larger than the sum of its proper divisors (5024705).

85419679 is a wasteful number, since it uses less digits than its factorization.

85419679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024704.

The product of its digits is 544320, while the sum is 49.

The square root of 85419679 is about 9242.2767216742. The cubic root of 85419679 is about 440.4054097487.

The spelling of 85419679 in words is "eighty-five million, four hundred nineteen thousand, six hundred seventy-nine".