424644457 has 2 divisors, whose sum is σ = 424644458. Its totient is φ = 424644456.

The previous prime is 424644347. The next prime is 424644497. The reversal of 424644457 is 754446424.

It is an a-pointer prime, because the next prime (424644497) can be obtained adding 424644457 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 390023001 + 34621456 = 19749^2 + 5884^2 .

It is a cyclic number.

It is not a de Polignac number, because 424644457 - 2¹⁵ = 424611689 is a prime.

It is not a weakly prime, because it can be changed into another prime (424644497) 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, 212322228 + 212322229.

It is an arithmetic number, because the mean of its divisors is an integer number (212322229).

Almost surely, 2^424644457 is an apocalyptic number.

It is an amenable number.

424644457 is a deficient number, since it is larger than the sum of its proper divisors (1).

424644457 is an equidigital number, since it uses as much as digits as its factorization.

424644457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 430080, while the sum is 40.

The square root of 424644457 is about 20606.9031394822. The cubic root of 424644457 is about 751.6375815370.

The spelling of 424644457 in words is "four hundred twenty-four million, six hundred forty-four thousand, four hundred fifty-seven".