85490469 has 24 divisors (see below), whose sum is σ = 126640800. Its totient is φ = 55554720.

The previous prime is 85490441. The next prime is 85490477. The reversal of 85490469 is 96409458.

It is a happy number.

It is not a de Polignac number, because 85490469 - 2⁵ = 85490437 is a prime.

It is a super-2 number, since 2×85490469² = 14617240579679922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85490429) 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 23 ways as a sum of consecutive naturals, for example, 68947 + ... + 70175.

It is an arithmetic number, because the mean of its divisors is an integer number (5276700).

Almost surely, 2^85490469 is an apocalyptic number.

It is an amenable number.

85490469 is a deficient number, since it is larger than the sum of its proper divisors (41150331).

85490469 is a wasteful number, since it uses less digits than its factorization.

85490469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425 (or 1422 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 85490469 is about 9246.1056126350. The cubic root of 85490469 is about 440.5270354717.

The spelling of 85490469 in words is "eighty-five million, four hundred ninety thousand, four hundred sixty-nine".