428944929 has 8 divisors (see below), whose sum is σ = 653630400. Its totient is φ = 245111376.

The previous prime is 428944897. The next prime is 428944933. The reversal of 428944929 is 929449824.

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

It is not a de Polignac number, because 428944929 - 2⁵ = 428944897 is a prime.

It is a super-2 number, since 2×428944929² = 367987504229630082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428944129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10212954 + ... + 10212995.

It is an arithmetic number, because the mean of its divisors is an integer number (81703800).

Almost surely, 2^428944929 is an apocalyptic number.

It is an amenable number.

428944929 is a deficient number, since it is larger than the sum of its proper divisors (224685471).

428944929 is a wasteful number, since it uses less digits than its factorization.

428944929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20425959.

The product of its digits is 1492992, while the sum is 51.

The square root of 428944929 is about 20710.9857080729. The cubic root of 428944929 is about 754.1663995169.

The spelling of 428944929 in words is "four hundred twenty-eight million, nine hundred forty-four thousand, nine hundred twenty-nine".