427488863989 has 4 divisors (see below), whose sum is σ = 466351488000. Its totient is φ = 388626239980.

The previous prime is 427488863983. The next prime is 427488863993. The reversal of 427488863989 is 989368884724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 427488863989 - 2⁵ = 427488863957 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 (427488863983) 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, 19431311989 + ... + 19431312010.

It is an arithmetic number, because the mean of its divisors is an integer number (116587872000).

Almost surely, 2^427488863989 is an apocalyptic number.

It is an amenable number.

427488863989 is a deficient number, since it is larger than the sum of its proper divisors (38862624011).

427488863989 is a wasteful number, since it uses less digits than its factorization.

427488863989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38862624010.

The product of its digits is 1337720832, while the sum is 76.

The spelling of 427488863989 in words is "four hundred twenty-seven billion, four hundred eighty-eight million, eight hundred sixty-three thousand, nine hundred eighty-nine".