428365751469 has 4 divisors (see below), whose sum is σ = 571154335296. Its totient is φ = 285577167644.

The previous prime is 428365751441. The next prime is 428365751501. The reversal of 428365751469 is 964157563824.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 428365751469 - 2⁸ = 428365751213 is a prime.

It is a super-2 number, since 2×428365751469² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428363751469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71394291909 + ... + 71394291914.

It is an arithmetic number, because the mean of its divisors is an integer number (142788583824).

Almost surely, 2^428365751469 is an apocalyptic number.

It is an amenable number.

428365751469 is a deficient number, since it is larger than the sum of its proper divisors (142788583827).

428365751469 is a wasteful number, since it uses less digits than its factorization.

428365751469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142788583826.

The product of its digits is 43545600, while the sum is 60.

The spelling of 428365751469 in words is "four hundred twenty-eight billion, three hundred sixty-five million, seven hundred fifty-one thousand, four hundred sixty-nine".