428349269 has 8 divisors (see below), whose sum is σ = 431973120. Its totient is φ = 424732896.

The previous prime is 428349253. The next prime is 428349287. The reversal of 428349269 is 962943824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428349269 - 2⁴ = 428349253 is a prime.

It is a super-2 number, since 2×428349269² = 366966192505668722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428349209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198812 + ... + 200954.

It is an arithmetic number, because the mean of its divisors is an integer number (53996640).

Almost surely, 2^428349269 is an apocalyptic number.

It is an amenable number.

428349269 is a deficient number, since it is larger than the sum of its proper divisors (3623851).

428349269 is a wasteful number, since it uses less digits than its factorization.

428349269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3739.

The product of its digits is 746496, while the sum is 47.

The square root of 428349269 is about 20696.6004213252. The cubic root of 428349269 is about 753.8171434476.

The spelling of 428349269 in words is "four hundred twenty-eight million, three hundred forty-nine thousand, two hundred sixty-nine".