489971946 has 8 divisors (see below), whose sum is σ = 979943904. Its totient is φ = 163323980.

The previous prime is 489971917. The next prime is 489972031. The reversal of 489971946 is 649179984.

It is a sphenic number, since it is the product of 3 distinct primes.

489971946 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40830990 + ... + 40831001.

It is an arithmetic number, because the mean of its divisors is an integer number (122492988).

Almost surely, 2^489971946 is an apocalyptic number.

489971946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

489971946 is a wasteful number, since it uses less digits than its factorization.

489971946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81661996.

The product of its digits is 3919104, while the sum is 57.

The square root of 489971946 is about 22135.3099368407. The cubic root of 489971946 is about 788.3584704243.

The spelling of 489971946 in words is "four hundred eighty-nine million, nine hundred seventy-one thousand, nine hundred forty-six".