85958739 has 20 divisors (see below), whose sum is σ = 130836816. Its totient is φ = 56221776.

The previous prime is 85958737. The next prime is 85958759. The reversal of 85958739 is 93785958.

85958739 is a `hidden beast` number, since 8 + 59 + 587 + 3 + 9 = 666.

It is not a de Polignac number, because 85958739 - 2¹ = 85958737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85958737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5719 + ... + 14304.

Almost surely, 2^85958739 is an apocalyptic number.

85958739 is a deficient number, since it is larger than the sum of its proper divisors (44878077).

85958739 is a wasteful number, since it uses less digits than its factorization.

85958739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20088 (or 20079 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The square root of 85958739 is about 9271.3935845697. The cubic root of 85958739 is about 441.3298933786.

The spelling of 85958739 in words is "eighty-five million, nine hundred fifty-eight thousand, seven hundred thirty-nine".