85499290 has 16 divisors (see below), whose sum is σ = 162951912. Its totient is φ = 32187904.

The previous prime is 85499287. The next prime is 85499291. The reversal of 85499290 is 9299458.

It can be written as a sum of positive squares in 4 ways, for example, as 85248289 + 251001 = 9233^2 + 501^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 85499290.

It is not an unprimeable number, because it can be changed into a prime (85499291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251299 + ... + 251638.

Almost surely, 2^85499290 is an apocalyptic number.

85499290 is a deficient number, since it is larger than the sum of its proper divisors (77452622).

85499290 is a wasteful number, since it uses less digits than its factorization.

85499290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502961.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 85499290 is about 9246.5826119708. The cubic root of 85499290 is about 440.5421863043.

The spelling of 85499290 in words is "eighty-five million, four hundred ninety-nine thousand, two hundred ninety".