489657031 has 2 divisors, whose sum is σ = 489657032. Its totient is φ = 489657030.

The previous prime is 489657023. The next prime is 489657041. The reversal of 489657031 is 130756984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489657031 - 2³ = 489657023 is a prime.

It is a super-2 number, since 2×489657031² = 479528016015469922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489657041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244828515 + 244828516.

It is an arithmetic number, because the mean of its divisors is an integer number (244828516).

Almost surely, 2^489657031 is an apocalyptic number.

489657031 is a deficient number, since it is larger than the sum of its proper divisors (1).

489657031 is an equidigital number, since it uses as much as digits as its factorization.

489657031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 489657031 is about 22128.1953850738. The cubic root of 489657031 is about 788.1895361841.

The spelling of 489657031 in words is "four hundred eighty-nine million, six hundred fifty-seven thousand, thirty-one".