80287139 has 8 divisors (see below), whose sum is σ = 82125120. Its totient is φ = 78454656.

The previous prime is 80287133. The next prime is 80287159. The reversal of 80287139 is 93178208.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-80287139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80287133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46577 + ... + 48269.

It is an arithmetic number, because the mean of its divisors is an integer number (10265640).

Almost surely, 2^80287139 is an apocalyptic number.

80287139 is a deficient number, since it is larger than the sum of its proper divisors (1837981).

80287139 is a wasteful number, since it uses less digits than its factorization.

80287139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2749.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 80287139 is about 8960.3090906508. The cubic root of 80287139 is about 431.4018409792.

The spelling of 80287139 in words is "eighty million, two hundred eighty-seven thousand, one hundred thirty-nine".