85869957 has 16 divisors (see below), whose sum is σ = 120456000. Its totient is φ = 54332544.

The previous prime is 85869937. The next prime is 85869983. The reversal of 85869957 is 75996858.

It is not a de Polignac number, because 85869957 - 2⁷ = 85869829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85869897 and 85869906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85869937) 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, 3232 + ... + 13497.

It is an arithmetic number, because the mean of its divisors is an integer number (7528500).

Almost surely, 2^85869957 is an apocalyptic number.

85869957 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

85869957 is a deficient number, since it is larger than the sum of its proper divisors (34586043).

85869957 is a wasteful number, since it uses less digits than its factorization.

85869957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16820.

The product of its digits is 5443200, while the sum is 57.

The square root of 85869957 is about 9266.6043942752. The cubic root of 85869957 is about 441.1778993386.

The spelling of 85869957 in words is "eighty-five million, eight hundred sixty-nine thousand, nine hundred fifty-seven".