80455139 has 4 divisors (see below), whose sum is σ = 84689640. Its totient is φ = 76220640.

The previous prime is 80455129. The next prime is 80455147. The reversal of 80455139 is 93155408.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80455139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80455099 and 80455108.

It is not an unprimeable number, because it can be changed into a prime (80455129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2117222 + ... + 2117259.

It is an arithmetic number, because the mean of its divisors is an integer number (21172410).

Almost surely, 2^80455139 is an apocalyptic number.

80455139 is a deficient number, since it is larger than the sum of its proper divisors (4234501).

80455139 is a wasteful number, since it uses less digits than its factorization.

80455139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4234500.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 80455139 is about 8969.6788682762. The cubic root of 80455139 is about 431.7025326278.

The spelling of 80455139 in words is "eighty million, four hundred fifty-five thousand, one hundred thirty-nine".