85134919 has 2 divisors, whose sum is σ = 85134920. Its totient is φ = 85134918.

The previous prime is 85134911. The next prime is 85134949. The reversal of 85134919 is 91943158.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85134919 - 2³ = 85134911 is a prime.

It is a super-2 number, since 2×85134919² = 14495908866273122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85134911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42567459 + 42567460.

It is an arithmetic number, because the mean of its divisors is an integer number (42567460).

Almost surely, 2^85134919 is an apocalyptic number.

85134919 is a deficient number, since it is larger than the sum of its proper divisors (1).

85134919 is an equidigital number, since it uses as much as digits as its factorization.

85134919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 40.

The square root of 85134919 is about 9226.8585661643. The cubic root of 85134919 is about 439.9154779107.

The spelling of 85134919 in words is "eighty-five million, one hundred thirty-four thousand, nine hundred nineteen".