85758399 has 16 divisors (see below), whose sum is σ = 129448800. Its totient is φ = 56092608.

The previous prime is 85758389. The next prime is 85758403. The reversal of 85758399 is 99385758.

85758399 is a `hidden beast` number, since 8 + 57 + 583 + 9 + 9 = 666.

It is not a de Polignac number, because 85758399 - 2⁵ = 85758367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85758359) 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, 28534 + ... + 31395.

It is an arithmetic number, because the mean of its divisors is an integer number (8090550).

Almost surely, 2^85758399 is an apocalyptic number.

85758399 is a deficient number, since it is larger than the sum of its proper divisors (43690401).

85758399 is a wasteful number, since it uses less digits than its factorization.

85758399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59991 (or 59985 counting only the distinct ones).

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

The square root of 85758399 is about 9260.5830809944. The cubic root of 85758399 is about 440.9867643767.

The spelling of 85758399 in words is "eighty-five million, seven hundred fifty-eight thousand, three hundred ninety-nine".