85390874 has 8 divisors (see below), whose sum is σ = 129841140. Its totient is φ = 42110496.

The previous prime is 85390873. The next prime is 85390889. The reversal of 85390874 is 47809358.

It can be written as a sum of positive squares in 2 ways, for example, as 75811849 + 9579025 = 8707^2 + 3095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85390871) 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, 292289 + ... + 292580.

Almost surely, 2^85390874 is an apocalyptic number.

85390874 is a deficient number, since it is larger than the sum of its proper divisors (44450266).

85390874 is a wasteful number, since it uses less digits than its factorization.

85390874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584944.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 85390874 is about 9240.7182621266. The cubic root of 85390874 is about 440.3559000642.

The spelling of 85390874 in words is "eighty-five million, three hundred ninety thousand, eight hundred seventy-four".