85208969 has 4 divisors (see below), whose sum is σ = 85591296. Its totient is φ = 84826644.

The previous prime is 85208933. The next prime is 85208983. The reversal of 85208969 is 96980258.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96980258 = 2 ⋅48490129.

It is a cyclic number.

It is not a de Polignac number, because 85208969 - 2¹⁶ = 85143433 is a prime.

It is a super-2 number, since 2×85208969² = 14521136796085922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85208909) 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, 190829 + ... + 191274.

It is an arithmetic number, because the mean of its divisors is an integer number (21397824).

Almost surely, 2^85208969 is an apocalyptic number.

It is an amenable number.

85208969 is a deficient number, since it is larger than the sum of its proper divisors (382327).

85208969 is a wasteful number, since it uses less digits than its factorization.

85208969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382326.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 85208969 is about 9230.8704356632. The cubic root of 85208969 is about 440.0429865027.

The spelling of 85208969 in words is "eighty-five million, two hundred eight thousand, nine hundred sixty-nine".