85801739 has 4 divisors (see below), whose sum is σ = 90317640. Its totient is φ = 81285840.

The previous prime is 85801721. The next prime is 85801747. The reversal of 85801739 is 93710858.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93710858 = 2 ⋅46855429.

It is a cyclic number.

It is not a de Polignac number, because 85801739 - 2¹² = 85797643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85801696 and 85801705.

It is not an unprimeable number, because it can be changed into a prime (85801789) 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, 2257922 + ... + 2257959.

It is an arithmetic number, because the mean of its divisors is an integer number (22579410).

Almost surely, 2^85801739 is an apocalyptic number.

85801739 is a deficient number, since it is larger than the sum of its proper divisors (4515901).

85801739 is a wasteful number, since it uses less digits than its factorization.

85801739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4515900.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 85801739 is about 9262.9228108627. The cubic root of 85801739 is about 441.0610395026.

The spelling of 85801739 in words is "eighty-five million, eight hundred one thousand, seven hundred thirty-nine".