491462957 has 2 divisors, whose sum is σ = 491462958. Its totient is φ = 491462956.

The previous prime is 491462903. The next prime is 491462969. The reversal of 491462957 is 759264194.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 288286441 + 203176516 = 16979^2 + 14254^2 .

It is a cyclic number.

It is not a de Polignac number, because 491462957 - 2⁸ = 491462701 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491462357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245731478 + 245731479.

It is an arithmetic number, because the mean of its divisors is an integer number (245731479).

Almost surely, 2^491462957 is an apocalyptic number.

It is an amenable number.

491462957 is a deficient number, since it is larger than the sum of its proper divisors (1).

491462957 is an equidigital number, since it uses as much as digits as its factorization.

491462957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 47.

The square root of 491462957 is about 22168.9638233274. The cubic root of 491462957 is about 789.1573330614.

The spelling of 491462957 in words is "four hundred ninety-one million, four hundred sixty-two thousand, nine hundred fifty-seven".