85149969 has 8 divisors (see below), whose sum is σ = 114657792. Its totient is φ = 56204400.

The previous prime is 85149943. The next prime is 85149971. The reversal of 85149969 is 96994158.

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

It is not a de Polignac number, because 85149969 - 2⁵ = 85149937 is a prime.

It is a super-2 number, since 2×85149969² = 14501034441401922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85149919) 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, 140209 + ... + 140814.

It is an arithmetic number, because the mean of its divisors is an integer number (14332224).

Almost surely, 2^85149969 is an apocalyptic number.

It is an amenable number.

85149969 is a deficient number, since it is larger than the sum of its proper divisors (29507823).

85149969 is a wasteful number, since it uses less digits than its factorization.

85149969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281127.

The product of its digits is 699840, while the sum is 51.

The square root of 85149969 is about 9227.6740839715. The cubic root of 85149969 is about 439.9413988760.

The spelling of 85149969 in words is "eighty-five million, one hundred forty-nine thousand, nine hundred sixty-nine".