486640239 has 4 divisors (see below), whose sum is σ = 648853656. Its totient is φ = 324426824.

The previous prime is 486640211. The next prime is 486640307. The reversal of 486640239 is 932046684.

It is a happy number.

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 486640239 - 2¹⁷ = 486509167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 486640239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (486645239) 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, 81106704 + ... + 81106709.

It is an arithmetic number, because the mean of its divisors is an integer number (162213414).

Almost surely, 2^486640239 is an apocalyptic number.

486640239 is a deficient number, since it is larger than the sum of its proper divisors (162213417).

486640239 is a wasteful number, since it uses less digits than its factorization.

486640239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162213416.

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 486640239 is about 22059.9238212647. The cubic root of 486640239 is about 786.5675138565.

The spelling of 486640239 in words is "four hundred eighty-six million, six hundred forty thousand, two hundred thirty-nine".