489796157 has 2 divisors, whose sum is σ = 489796158. Its totient is φ = 489796156.

The previous prime is 489796123. The next prime is 489796159. The reversal of 489796157 is 751697984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 483516121 + 6280036 = 21989^2 + 2506^2 .

It is a cyclic number.

It is not a de Polignac number, because 489796157 - 2⁶ = 489796093 is a prime.

Together with 489796159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489796159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244898078 + 244898079.

It is an arithmetic number, because the mean of its divisors is an integer number (244898079).

Almost surely, 2^489796157 is an apocalyptic number.

It is an amenable number.

489796157 is a deficient number, since it is larger than the sum of its proper divisors (1).

489796157 is an equidigital number, since it uses as much as digits as its factorization.

489796157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 56.

The square root of 489796157 is about 22131.3387981839. The cubic root of 489796157 is about 788.2641784109.

The spelling of 489796157 in words is "four hundred eighty-nine million, seven hundred ninety-six thousand, one hundred fifty-seven".