424917869 has 2 divisors, whose sum is σ = 424917870. Its totient is φ = 424917868.

The previous prime is 424917851. The next prime is 424917877. The reversal of 424917869 is 968719424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402002500 + 22915369 = 20050^2 + 4787^2 .

It is a cyclic number.

It is not a de Polignac number, because 424917869 - 2⁸ = 424917613 is a prime.

It is a super-2 number, since 2×424917869² = 361110390791002322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424911869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212458934 + 212458935.

It is an arithmetic number, because the mean of its divisors is an integer number (212458935).

Almost surely, 2^424917869 is an apocalyptic number.

It is an amenable number.

424917869 is a deficient number, since it is larger than the sum of its proper divisors (1).

424917869 is an equidigital number, since it uses as much as digits as its factorization.

424917869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 50.

The square root of 424917869 is about 20613.5360625003. The cubic root of 424917869 is about 751.7988636330.

The spelling of 424917869 in words is "four hundred twenty-four million, nine hundred seventeen thousand, eight hundred sixty-nine".