85949090 has 16 divisors (see below), whose sum is σ = 154870272. Its totient is φ = 34343664.

The previous prime is 85949089. The next prime is 85949099. The reversal of 85949090 is 9094958.

It is not an unprimeable number, because it can be changed into a prime (85949099) 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, 6917 + ... + 14823.

It is an arithmetic number, because the mean of its divisors is an integer number (9679392).

Almost surely, 2^85949090 is an apocalyptic number.

85949090 is a deficient number, since it is larger than the sum of its proper divisors (68921182).

85949090 is a wasteful number, since it uses less digits than its factorization.

85949090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9001.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 85949090 is about 9270.8732059068. The cubic root of 85949090 is about 441.3133794420.

The spelling of 85949090 in words is "eighty-five million, nine hundred forty-nine thousand, ninety".