489978425 has 6 divisors (see below), whose sum is σ = 607573278. Its totient is φ = 391982720.

The previous prime is 489978367. The next prime is 489978439. The reversal of 489978425 is 524879984.

It can be written as a sum of positive squares in 3 ways, for example, as 18567481 + 471410944 = 4309^2 + 21712^2 .

It is not a de Polignac number, because 489978425 - 2¹⁰ = 489977401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9799544 + ... + 9799593.

It is an arithmetic number, because the mean of its divisors is an integer number (101262213).

Almost surely, 2^489978425 is an apocalyptic number.

It is an amenable number.

489978425 is a deficient number, since it is larger than the sum of its proper divisors (117594853).

489978425 is a wasteful number, since it uses less digits than its factorization.

489978425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19599147 (or 19599142 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 56.

The square root of 489978425 is about 22135.4562862391. The cubic root of 489978425 is about 788.3619452845.

The spelling of 489978425 in words is "four hundred eighty-nine million, nine hundred seventy-eight thousand, four hundred twenty-five".