85980169 has 16 divisors (see below), whose sum is σ = 101010240. Its totient is φ = 72309760.

The previous prime is 85980137. The next prime is 85980173. The reversal of 85980169 is 96108958.

It is a cyclic number.

It is not a de Polignac number, because 85980169 - 2⁵ = 85980137 is a prime.

It is a super-2 number, since 2×85980169² = 14785178922537122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85980269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7137 + ... + 14929.

It is an arithmetic number, because the mean of its divisors is an integer number (6313140).

Almost surely, 2^85980169 is an apocalyptic number.

It is an amenable number.

85980169 is a deficient number, since it is larger than the sum of its proper divisors (15030071).

85980169 is a wasteful number, since it uses less digits than its factorization.

85980169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7880.

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 85980169 is about 9272.5492179875. The cubic root of 85980169 is about 441.3665656777.

The spelling of 85980169 in words is "eighty-five million, nine hundred eighty thousand, one hundred sixty-nine".