481989439 has 4 divisors (see below), whose sum is σ = 482996160. Its totient is φ = 480982720.

The previous prime is 481989437. The next prime is 481989461. The reversal of 481989439 is 934989184.

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 481989439 - 2¹ = 481989437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 481989439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481989437) 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, 502642 + ... + 503599.

It is an arithmetic number, because the mean of its divisors is an integer number (120749040).

Almost surely, 2^481989439 is an apocalyptic number.

481989439 is a deficient number, since it is larger than the sum of its proper divisors (1006721).

481989439 is a wasteful number, since it uses less digits than its factorization.

481989439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006720.

The product of its digits is 2239488, while the sum is 55.

The square root of 481989439 is about 21954.2578785984. The cubic root of 481989439 is about 784.0537580927.

The spelling of 481989439 in words is "four hundred eighty-one million, nine hundred eighty-nine thousand, four hundred thirty-nine".