428905977 has 8 divisors (see below), whose sum is σ = 571978080. Its totient is φ = 285885600.

The previous prime is 428905957. The next prime is 428905979. The reversal of 428905977 is 779509824.

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

It is not a de Polignac number, because 428905977 - 2⁶ = 428905913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428905979) 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, 15102 + ... + 32952.

It is an arithmetic number, because the mean of its divisors is an integer number (71497260).

Almost surely, 2^428905977 is an apocalyptic number.

It is an amenable number.

428905977 is a deficient number, since it is larger than the sum of its proper divisors (143072103).

428905977 is a wasteful number, since it uses less digits than its factorization.

428905977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25863.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The square root of 428905977 is about 20710.0453162228. The cubic root of 428905977 is about 754.1435704956.

The spelling of 428905977 in words is "four hundred twenty-eight million, nine hundred five thousand, nine hundred seventy-seven".