85442797 has 16 divisors (see below), whose sum is σ = 95463360. Its totient is φ = 75817600.

The previous prime is 85442783. The next prime is 85442809. The reversal of 85442797 is 79724458.

It is a cyclic number.

It is not a de Polignac number, because 85442797 - 2¹¹ = 85440749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85442717) 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, 111897 + ... + 112657.

It is an arithmetic number, because the mean of its divisors is an integer number (5966460).

Almost surely, 2^85442797 is an apocalyptic number.

It is an amenable number.

85442797 is a deficient number, since it is larger than the sum of its proper divisors (10020563).

85442797 is a wasteful number, since it uses less digits than its factorization.

85442797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004.

The product of its digits is 564480, while the sum is 46.

The square root of 85442797 is about 9243.5273029293. The cubic root of 85442797 is about 440.4451366361.

The spelling of 85442797 in words is "eighty-five million, four hundred forty-two thousand, seven hundred ninety-seven".