85044390 has 16 divisors (see below), whose sum is σ = 204106608. Its totient is φ = 22678496.

The previous prime is 85044371. The next prime is 85044391. The reversal of 85044390 is 9344058.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85044391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1417377 + ... + 1417436.

It is an arithmetic number, because the mean of its divisors is an integer number (12756663).

Almost surely, 2^85044390 is an apocalyptic number.

85044390 is an abundant number, since it is smaller than the sum of its proper divisors (119062218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85044390 is a wasteful number, since it uses less digits than its factorization.

85044390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834823.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 85044390 is about 9221.9515288251. The cubic root of 85044390 is about 439.7594932171.

The spelling of 85044390 in words is "eighty-five million, forty-four thousand, three hundred ninety".