909042469 has 2 divisors, whose sum is σ = 909042470. Its totient is φ = 909042468.

The previous prime is 909042467. The next prime is 909042473. The reversal of 909042469 is 964240909.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 855562500 + 53479969 = 29250^2 + 7313^2 .

It is a cyclic number.

It is not a de Polignac number, because 909042469 - 2¹ = 909042467 is a prime.

It is a super-2 number, since 2×909042469² = 1652716420891231922, which contains 22 as substring.

Together with 909042467, it forms a pair of twin primes.

It is equal to p_46447819 and since 909042469 and 46447819 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (909042461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454521234 + 454521235.

It is an arithmetic number, because the mean of its divisors is an integer number (454521235).

Almost surely, 2^909042469 is an apocalyptic number.

It is an amenable number.

909042469 is a deficient number, since it is larger than the sum of its proper divisors (1).

909042469 is an equidigital number, since it uses as much as digits as its factorization.

909042469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 909042469 is about 30150.3311590437. The cubic root of 909042469 is about 968.7120998894.

The spelling of 909042469 in words is "nine hundred nine million, forty-two thousand, four hundred sixty-nine".