80740139 has 4 divisors (see below), whose sum is σ = 84989640. Its totient is φ = 76490640.

The previous prime is 80740129. The next prime is 80740141. The reversal of 80740139 is 93104708.

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

It is a cyclic number.

It is not a de Polignac number, because 80740139 - 2²⁴ = 63962923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80740129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2124722 + ... + 2124759.

It is an arithmetic number, because the mean of its divisors is an integer number (21247410).

Almost surely, 2^80740139 is an apocalyptic number.

80740139 is a deficient number, since it is larger than the sum of its proper divisors (4249501).

80740139 is a wasteful number, since it uses less digits than its factorization.

80740139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249500.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 80740139 is about 8985.5516803366. The cubic root of 80740139 is about 432.2116785972.

The spelling of 80740139 in words is "eighty million, seven hundred forty thousand, one hundred thirty-nine".