489394157 has 4 divisors (see below), whose sum is σ = 559307616. Its totient is φ = 419480700.

The previous prime is 489394141. The next prime is 489394183. The reversal of 489394157 is 751493984.

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 a cyclic number.

It is not a de Polignac number, because 489394157 - 2⁴ = 489394141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489394757) 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, 34956719 + ... + 34956732.

It is an arithmetic number, because the mean of its divisors is an integer number (139826904).

Almost surely, 2^489394157 is an apocalyptic number.

It is an amenable number.

489394157 is a deficient number, since it is larger than the sum of its proper divisors (69913459).

489394157 is an equidigital number, since it uses as much as digits as its factorization.

489394157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69913458.

The product of its digits is 1088640, while the sum is 50.

The square root of 489394157 is about 22122.2547901429. The cubic root of 489394157 is about 788.0484635477.

The spelling of 489394157 in words is "four hundred eighty-nine million, three hundred ninety-four thousand, one hundred fifty-seven".