80477747 has 8 divisors (see below), whose sum is σ = 93852000. Its totient is φ = 68980632.

The previous prime is 80477743. The next prime is 80477777. The reversal of 80477747 is 74777408.

It is not a de Polignac number, because 80477747 - 2² = 80477743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80477698 and 80477707.

It is not an unprimeable number, because it can be changed into a prime (80477743) 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 7 ways as a sum of consecutive naturals, for example, 116972 + ... + 117657.

It is an arithmetic number, because the mean of its divisors is an integer number (11731500).

Almost surely, 2^80477747 is an apocalyptic number.

80477747 is a deficient number, since it is larger than the sum of its proper divisors (13374253).

80477747 is an equidigital number, since it uses as much as digits as its factorization.

80477747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234650 (or 234636 counting only the distinct ones).

The product of its (nonzero) digits is 307328, while the sum is 44.

The square root of 80477747 is about 8970.9390255424. The cubic root of 80477747 is about 431.7429651675.

The spelling of 80477747 in words is "eighty million, four hundred seventy-seven thousand, seven hundred forty-seven".