428379269 has 2 divisors, whose sum is σ = 428379270. Its totient is φ = 428379268.

The previous prime is 428379251. The next prime is 428379283. The reversal of 428379269 is 962973824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315488644 + 112890625 = 17762^2 + 10625^2 .

It is a cyclic number.

It is not a de Polignac number, because 428379269 - 2⁸ = 428379013 is a prime.

It is a super-2 number, since 2×428379269² = 367017596217948722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428379769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214189634 + 214189635.

It is an arithmetic number, because the mean of its divisors is an integer number (214189635).

Almost surely, 2^428379269 is an apocalyptic number.

It is an amenable number.

428379269 is a deficient number, since it is larger than the sum of its proper divisors (1).

428379269 is an equidigital number, since it uses as much as digits as its factorization.

428379269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 50.

The square root of 428379269 is about 20697.3251653444. The cubic root of 428379269 is about 753.8347412258.

The spelling of 428379269 in words is "four hundred twenty-eight million, three hundred seventy-nine thousand, two hundred sixty-nine".