428999950 has 12 divisors (see below), whose sum is σ = 797940000. Its totient is φ = 171599960.

The previous prime is 428999939. The next prime is 428999953. The reversal of 428999950 is 59999824.

It is a junction number, because it is equal to n+sod(n) for n = 428999891 and 428999900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428999953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4289950 + ... + 4290049.

It is an arithmetic number, because the mean of its divisors is an integer number (66495000).

Almost surely, 2^428999950 is an apocalyptic number.

428999950 is a deficient number, since it is larger than the sum of its proper divisors (368940050).

428999950 is a wasteful number, since it uses less digits than its factorization.

428999950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8580011 (or 8580006 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 55.

The square root of 428999950 is about 20712.3139701966. The cubic root of 428999950 is about 754.1986439168.

The spelling of 428999950 in words is "four hundred twenty-eight million, nine hundred ninety-nine thousand, nine hundred fifty".