489127421 has 2 divisors, whose sum is σ = 489127422. Its totient is φ = 489127420.

The previous prime is 489127399. The next prime is 489127439. The reversal of 489127421 is 124721984.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 482680900 + 6446521 = 21970^2 + 2539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489127421 is a prime.

It is a super-2 number, since 2×489127421² = 478491267948222482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489157421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244563710 + 244563711.

It is an arithmetic number, because the mean of its divisors is an integer number (244563711).

Almost surely, 2^489127421 is an apocalyptic number.

It is an amenable number.

489127421 is a deficient number, since it is larger than the sum of its proper divisors (1).

489127421 is an equidigital number, since it uses as much as digits as its factorization.

489127421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 38.

The square root of 489127421 is about 22116.2252882358. The cubic root of 489127421 is about 787.9052667043.

The spelling of 489127421 in words is "four hundred eighty-nine million, one hundred twenty-seven thousand, four hundred twenty-one".