428908093 has 8 divisors (see below), whose sum is σ = 440435520. Its totient is φ = 417431520.

The previous prime is 428908063. The next prime is 428908097. The reversal of 428908093 is 390809824.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 428908093 - 2¹⁷ = 428777021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428908097) 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, 4696 + ... + 29662.

It is an arithmetic number, because the mean of its divisors is an integer number (55054440).

Almost surely, 2^428908093 is an apocalyptic number.

It is an amenable number.

428908093 is a deficient number, since it is larger than the sum of its proper divisors (11527427).

428908093 is a wasteful number, since it uses less digits than its factorization.

428908093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25427.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 428908093 is about 20710.0964024796. The cubic root of 428908093 is about 754.1448106782.

The spelling of 428908093 in words is "four hundred twenty-eight million, nine hundred eight thousand, ninety-three".