80514729 has 15 divisors (see below), whose sum is σ = 120395847. Its totient is φ = 53622648.

The previous prime is 80514727. The next prime is 80514751. The reversal of 80514729 is 92741508.

The square root of 80514729 is 8973.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 69305625 + 11209104 = 8325^2 + 3348^2 .

It is not a de Polignac number, because 80514729 - 2¹ = 80514727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80514693 and 80514702.

It is not an unprimeable number, because it can be changed into a prime (80514727) 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 14 ways as a sum of consecutive naturals, for example, 80259 + ... + 81255.

Almost surely, 2^80514729 is an apocalyptic number.

80514729 is the 8973-rd square number.

80514729 is the 4487-th centered octagonal number.

It is an amenable number.

80514729 is a deficient number, since it is larger than the sum of its proper divisors (39881118).

80514729 is an frugal number, since it uses more digits than its factorization.

80514729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The cubic root of 80514729 is about 431.8090880973.

Multiplying 80514729 by its sum of digits (36), we get a square (2898530244 = 53838²).

The spelling of 80514729 in words is "eighty million, five hundred fourteen thousand, seven hundred twenty-nine".