424641491 has 2 divisors, whose sum is σ = 424641492. Its totient is φ = 424641490.

The previous prime is 424641443. The next prime is 424641587. The reversal of 424641491 is 194146424.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424641491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (424646491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212320745 + 212320746.

It is an arithmetic number, because the mean of its divisors is an integer number (212320746).

Almost surely, 2^424641491 is an apocalyptic number.

424641491 is a deficient number, since it is larger than the sum of its proper divisors (1).

424641491 is an equidigital number, since it uses as much as digits as its factorization.

424641491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 35.

The square root of 424641491 is about 20606.8311731814. The cubic root of 424641491 is about 751.6358315536.

The spelling of 424641491 in words is "four hundred twenty-four million, six hundred forty-one thousand, four hundred ninety-one".