489931893 has 12 divisors (see below), whose sum is σ = 772014048. Its totient is φ = 296928360.

The previous prime is 489931861. The next prime is 489931903. The reversal of 489931893 is 398139984.

It is not a de Polignac number, because 489931893 - 2⁵ = 489931861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489931193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2474305 + ... + 2474502.

It is an arithmetic number, because the mean of its divisors is an integer number (64334504).

Almost surely, 2^489931893 is an apocalyptic number.

It is an amenable number.

489931893 is a deficient number, since it is larger than the sum of its proper divisors (282082155).

489931893 is a wasteful number, since it uses less digits than its factorization.

489931893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4948824 (or 4948821 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 489931893 is about 22134.4051874000. The cubic root of 489931893 is about 788.3369882541.

The spelling of 489931893 in words is "four hundred eighty-nine million, nine hundred thirty-one thousand, eight hundred ninety-three".