80477849 has 16 divisors (see below), whose sum is σ = 84900816. Its totient is φ = 76204800.

The previous prime is 80477843. The next prime is 80477857. The reversal of 80477849 is 94877408.

80477849 is nontrivially palindromic in base 2.

It can be written as a sum of positive squares in 8 ways, for example, as 697225 + 79780624 = 835^2 + 8932^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80477849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80477843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408419 + ... + 408615.

It is an arithmetic number, because the mean of its divisors is an integer number (5306301).

Almost surely, 2^80477849 is an apocalyptic number.

It is an amenable number.

80477849 is a deficient number, since it is larger than the sum of its proper divisors (4422967).

80477849 is a wasteful number, since it uses less digits than its factorization.

80477849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 80477849 is about 8970.9447105642. The cubic root of 80477849 is about 431.7431475689.

The spelling of 80477849 in words is "eighty million, four hundred seventy-seven thousand, eight hundred forty-nine".