428961429 has 24 divisors (see below), whose sum is σ = 668464160. Its totient is φ = 263505312.

The previous prime is 428961427. The next prime is 428961439. The reversal of 428961429 is 924169824.

428961429 is a `hidden beast` number, since 4 + 2 + 8 + 9 + 614 + 29 = 666.

It is not a de Polignac number, because 428961429 - 2¹ = 428961427 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428961427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69462 + ... + 75384.

Almost surely, 2^428961429 is an apocalyptic number.

It is an amenable number.

428961429 is a deficient number, since it is larger than the sum of its proper divisors (239502731).

428961429 is a wasteful number, since it uses less digits than its factorization.

428961429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6561 (or 6558 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 428961429 is about 20711.3840435641. The cubic root of 428961429 is about 754.1760694343.

The spelling of 428961429 in words is "four hundred twenty-eight million, nine hundred sixty-one thousand, four hundred twenty-nine".