80307729 has 12 divisors (see below), whose sum is σ = 117398736. Its totient is φ = 52892952.

The previous prime is 80307727. The next prime is 80307749. The reversal of 80307729 is 92770308.

It is not a de Polignac number, because 80307729 - 2¹ = 80307727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80307693 and 80307702.

It is not an unprimeable number, because it can be changed into a prime (80307727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53007 + ... + 54500.

It is an arithmetic number, because the mean of its divisors is an integer number (9783228).

Almost surely, 2^80307729 is an apocalyptic number.

It is an amenable number.

80307729 is a deficient number, since it is larger than the sum of its proper divisors (37091007).

80307729 is a wasteful number, since it uses less digits than its factorization.

80307729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107596 (or 107593 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 80307729 is about 8961.4579728970. The cubic root of 80307729 is about 431.4387161450.

The spelling of 80307729 in words is "eighty million, three hundred seven thousand, seven hundred twenty-nine".