424287491 has 2 divisors, whose sum is σ = 424287492. Its totient is φ = 424287490.

The previous prime is 424287481. The next prime is 424287503. The reversal of 424287491 is 194782424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 424287491 - 2⁶ = 424287427 is a prime.

It is not a weakly prime, because it can be changed into another prime (424287401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212143745 + 212143746.

It is an arithmetic number, because the mean of its divisors is an integer number (212143746).

Almost surely, 2^424287491 is an apocalyptic number.

424287491 is a deficient number, since it is larger than the sum of its proper divisors (1).

424287491 is an equidigital number, since it uses as much as digits as its factorization.

424287491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 41.

The square root of 424287491 is about 20598.2399976309. The cubic root of 424287491 is about 751.4269078201.

The spelling of 424287491 in words is "four hundred twenty-four million, two hundred eighty-seven thousand, four hundred ninety-one".