80849529 has 16 divisors (see below), whose sum is σ = 121809600. Its totient is φ = 52985088.

The previous prime is 80849507. The next prime is 80849567. The reversal of 80849529 is 92594808.

80849529 is a `hidden beast` number, since 80 + 8 + 49 + 529 = 666.

It is not a de Polignac number, because 80849529 - 2⁹ = 80849017 is a prime.

It is a super-3 number, since 3×80849529³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80841529) 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, 23784 + ... + 26969.

It is an arithmetic number, because the mean of its divisors is an integer number (7613100).

Almost surely, 2^80849529 is an apocalyptic number.

It is an amenable number.

80849529 is a deficient number, since it is larger than the sum of its proper divisors (40960071).

80849529 is a wasteful number, since it uses less digits than its factorization.

80849529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50821 (or 50815 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 80849529 is about 8991.6366140987. The cubic root of 80849529 is about 432.4067831224.

The spelling of 80849529 in words is "eighty million, eight hundred forty-nine thousand, five hundred twenty-nine".