424943887 has 2 divisors, whose sum is σ = 424943888. Its totient is φ = 424943886.

The previous prime is 424943881. The next prime is 424943891. The reversal of 424943887 is 788349424.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424943887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 424943887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424943881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212471943 + 212471944.

It is an arithmetic number, because the mean of its divisors is an integer number (212471944).

Almost surely, 2^424943887 is an apocalyptic number.

424943887 is a deficient number, since it is larger than the sum of its proper divisors (1).

424943887 is an equidigital number, since it uses as much as digits as its factorization.

424943887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1548288, while the sum is 49.

The square root of 424943887 is about 20614.1671430111. The cubic root of 424943887 is about 751.8142076991.

The spelling of 424943887 in words is "four hundred twenty-four million, nine hundred forty-three thousand, eight hundred eighty-seven".