428669740729 has 16 divisors (see below), whose sum is σ = 437741950464. Its totient is φ = 419719147200.

The previous prime is 428669740687. The next prime is 428669740781. The reversal of 428669740729 is 927047966824.

It is a cyclic number.

It is not a de Polignac number, because 428669740729 - 2⁹ = 428669740217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428669740789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3158784 + ... + 3291694.

It is an arithmetic number, because the mean of its divisors is an integer number (27358871904).

Almost surely, 2^428669740729 is an apocalyptic number.

It is an amenable number.

428669740729 is a deficient number, since it is larger than the sum of its proper divisors (9072209735).

428669740729 is a wasteful number, since it uses less digits than its factorization.

428669740729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133368.

The product of its (nonzero) digits is 73156608, while the sum is 64.

The spelling of 428669740729 in words is "four hundred twenty-eight billion, six hundred sixty-nine million, seven hundred forty thousand, seven hundred twenty-nine".