85942709 has 8 divisors (see below), whose sum is σ = 87759168. Its totient is φ = 84142080.

The previous prime is 85942699. The next prime is 85942739. The reversal of 85942709 is 90724958.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85942709 is a prime.

It is a super-2 number, since 2×85942709² = 14772298460517362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85942709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85942739) 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, 7349 + ... + 15029.

It is an arithmetic number, because the mean of its divisors is an integer number (10969896).

Almost surely, 2^85942709 is an apocalyptic number.

It is an amenable number.

85942709 is a deficient number, since it is larger than the sum of its proper divisors (1816459).

85942709 is a wasteful number, since it uses less digits than its factorization.

85942709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7915.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 85942709 is about 9270.5290571790. The cubic root of 85942709 is about 441.3024578978.

The spelling of 85942709 in words is "eighty-five million, nine hundred forty-two thousand, seven hundred nine".