80732949 has 16 divisors (see below), whose sum is σ = 124338240. Its totient is φ = 46050560.

The previous prime is 80732947. The next prime is 80732989. The reversal of 80732949 is 94923708.

It is a cyclic number.

It is not a de Polignac number, because 80732949 - 2¹ = 80732947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80732949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80732941) 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, 71394 + ... + 72515.

It is an arithmetic number, because the mean of its divisors is an integer number (7771140).

Almost surely, 2^80732949 is an apocalyptic number.

It is an amenable number.

80732949 is a deficient number, since it is larger than the sum of its proper divisors (43605291).

80732949 is a wasteful number, since it uses less digits than its factorization.

80732949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143940.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 80732949 is about 8985.1515846979. The cubic root of 80732949 is about 432.1988485713.

The spelling of 80732949 in words is "eighty million, seven hundred thirty-two thousand, nine hundred forty-nine".