85229739 has 40 divisors (see below), whose sum is σ = 146454528. Its totient is φ = 48386160.

The previous prime is 85229723. The next prime is 85229773. The reversal of 85229739 is 93792258.

85229739 is a `hidden beast` number, since 8 + 522 + 97 + 39 = 666.

It is not a de Polignac number, because 85229739 - 2⁴ = 85229723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85229694 and 85229703.

It is not an unprimeable number, because it can be changed into a prime (85224739) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 107904 + ... + 108690.

Almost surely, 2^85229739 is an apocalyptic number.

85229739 is a deficient number, since it is larger than the sum of its proper divisors (61224789).

85229739 is a wasteful number, since it uses less digits than its factorization.

85229739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997 (or 988 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 85229739 is about 9231.9953964460. The cubic root of 85229739 is about 440.0787376309.

The spelling of 85229739 in words is "eighty-five million, two hundred twenty-nine thousand, seven hundred thirty-nine".