424969819 has 2 divisors, whose sum is σ = 424969820. Its totient is φ = 424969818.

The previous prime is 424969777. The next prime is 424969849. The reversal of 424969819 is 918969424.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424969819 is a prime.

It is a super-2 number, since 2×424969819² = 361198694121785522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (424969849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212484909 + 212484910.

It is an arithmetic number, because the mean of its divisors is an integer number (212484910).

Almost surely, 2^424969819 is an apocalyptic number.

424969819 is a deficient number, since it is larger than the sum of its proper divisors (1).

424969819 is an equidigital number, since it uses as much as digits as its factorization.

424969819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 52.

The square root of 424969819 is about 20614.7961183224. The cubic root of 424969819 is about 751.8295004237.

The spelling of 424969819 in words is "four hundred twenty-four million, nine hundred sixty-nine thousand, eight hundred nineteen".