383647469 has 2 divisors, whose sum is σ = 383647470. Its totient is φ = 383647468.

The previous prime is 383647447. The next prime is 383647471. The reversal of 383647469 is 964746383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 344584969 + 39062500 = 18563^2 + 6250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-383647469 is a prime.

It is a super-2 number, since 2×383647469² = 294370760940211922, which contains 22 as substring.

Together with 383647471, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (383647169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191823734 + 191823735.

It is an arithmetic number, because the mean of its divisors is an integer number (191823735).

Almost surely, 2^383647469 is an apocalyptic number.

It is an amenable number.

383647469 is a deficient number, since it is larger than the sum of its proper divisors (1).

383647469 is an equidigital number, since it uses as much as digits as its factorization.

383647469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 50.

The square root of 383647469 is about 19586.9208657206. The cubic root of 383647469 is about 726.6257414831.

The spelling of 383647469 in words is "three hundred eighty-three million, six hundred forty-seven thousand, four hundred sixty-nine".