80439147 has 12 divisors (see below), whose sum is σ = 119330640. Its totient is φ = 52176528.

The previous prime is 80439131. The next prime is 80439173. The reversal of 80439147 is 74193408.

It is a happy number.

80439147 is a `hidden beast` number, since 80 + 439 + 147 = 666.

It is not a de Polignac number, because 80439147 - 2⁴ = 80439131 is a prime.

It is a super-3 number, since 3×80439147³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (80439547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120447 + ... + 121112.

It is an arithmetic number, because the mean of its divisors is an integer number (9944220).

Almost surely, 2^80439147 is an apocalyptic number.

80439147 is a deficient number, since it is larger than the sum of its proper divisors (38891493).

80439147 is a wasteful number, since it uses less digits than its factorization.

80439147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241602 (or 241599 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 80439147 is about 8968.7873762287. The cubic root of 80439147 is about 431.6739276832.

The spelling of 80439147 in words is "eighty million, four hundred thirty-nine thousand, one hundred forty-seven".