147280639 has 16 divisors (see below), whose sum is σ = 172467360. Its totient is φ = 124277760.

The previous prime is 147280621. The next prime is 147280667. The reversal of 147280639 is 936082741.

It is a cyclic number.

It is not a de Polignac number, because 147280639 - 2⁵ = 147280607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147280619) 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 15 ways as a sum of consecutive naturals, for example, 8257 + ... + 19045.

It is an arithmetic number, because the mean of its divisors is an integer number (10779210).

Almost surely, 2^147280639 is an apocalyptic number.

147280639 is a deficient number, since it is larger than the sum of its proper divisors (25186721).

147280639 is a wasteful number, since it uses less digits than its factorization.

147280639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10890.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 147280639 is about 12135.9234918485. The cubic root of 147280639 is about 528.0988477602.

The spelling of 147280639 in words is "one hundred forty-seven million, two hundred eighty thousand, six hundred thirty-nine".