85809339 has 90 divisors (see below), whose sum is σ = 166480236. Its totient is φ = 42230160.

The previous prime is 85809329. The next prime is 85809341. The reversal of 85809339 is 93390858.

It is not a de Polignac number, because 85809339 - 2¹⁵ = 85776571 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85809294 and 85809303.

It is not an unprimeable number, because it can be changed into a prime (85809329) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 4516272 + ... + 4516290.

Almost surely, 2^85809339 is an apocalyptic number.

85809339 is a deficient number, since it is larger than the sum of its proper divisors (80670897).

85809339 is a wasteful number, since it uses less digits than its factorization.

85809339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 85809339 is about 9263.3330394626. Note that the first 3 decimals coincide. The cubic root of 85809339 is about 441.0740616355.

The spelling of 85809339 in words is "eighty-five million, eight hundred nine thousand, three hundred thirty-nine".