85879511 has 4 divisors (see below), whose sum is σ = 86007792. Its totient is φ = 85751232.

The previous prime is 85879499. The next prime is 85879513. The reversal of 85879511 is 11597858.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11597858 = 2 ⋅5798929.

It is a cyclic number.

It is not a de Polignac number, because 85879511 - 2¹⁰ = 85878487 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 (85879513) 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, 63131 + ... + 64476.

It is an arithmetic number, because the mean of its divisors is an integer number (21501948).

Almost surely, 2^85879511 is an apocalyptic number.

85879511 is a deficient number, since it is larger than the sum of its proper divisors (128281).

85879511 is a wasteful number, since it uses less digits than its factorization.

85879511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128280.

The product of its digits is 100800, while the sum is 44.

The square root of 85879511 is about 9267.1198869983. The cubic root of 85879511 is about 441.1942607355.

The spelling of 85879511 in words is "eighty-five million, eight hundred seventy-nine thousand, five hundred eleven".