85007869 has 4 divisors (see below), whose sum is σ = 85027644. Its totient is φ = 84988096.

The previous prime is 85007851. The next prime is 85007873. The reversal of 85007869 is 96870058.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73188025 + 11819844 = 8555^2 + 3438^2 .

It is a cyclic number.

It is not a de Polignac number, because 85007869 - 2¹¹ = 85005821 is a prime.

It is a super-2 number, since 2×85007869² = 14452675583842322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85007809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412 + ... + 13045.

It is an arithmetic number, because the mean of its divisors is an integer number (21256911).

Almost surely, 2^85007869 is an apocalyptic number.

It is an amenable number.

85007869 is a deficient number, since it is larger than the sum of its proper divisors (19775).

85007869 is a wasteful number, since it uses less digits than its factorization.

85007869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19774.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 85007869 is about 9219.9712038596. The cubic root of 85007869 is about 439.6965348962.

The spelling of 85007869 in words is "eighty-five million, seven thousand, eight hundred sixty-nine".