85490791 has 8 divisors (see below), whose sum is σ = 87447744. Its totient is φ = 83539680.

The previous prime is 85490789. The next prime is 85490803. The reversal of 85490791 is 19709458.

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

It is not a de Polignac number, because 85490791 - 2¹ = 85490789 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 (85490761) 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, 43261 + ... + 45193.

It is an arithmetic number, because the mean of its divisors is an integer number (10930968).

Almost surely, 2^85490791 is an apocalyptic number.

85490791 is a deficient number, since it is larger than the sum of its proper divisors (1956953).

85490791 is a wasteful number, since it uses less digits than its factorization.

85490791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 85490791 is about 9246.1230253550. The cubic root of 85490791 is about 440.5275885530.

The spelling of 85490791 in words is "eighty-five million, four hundred ninety thousand, seven hundred ninety-one".