428535939 has 16 divisors (see below), whose sum is σ = 625766400. Its totient is φ = 259243296.

The previous prime is 428535911. The next prime is 428535941. The reversal of 428535939 is 939535824.

It is not a de Polignac number, because 428535939 - 2⁸ = 428535683 is a prime.

It is a super-2 number, since 2×428535939² = 367286102029223442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428535539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90819 + ... + 95420.

It is an arithmetic number, because the mean of its divisors is an integer number (39110400).

Almost surely, 2^428535939 is an apocalyptic number.

428535939 is a deficient number, since it is larger than the sum of its proper divisors (197230461).

428535939 is a wasteful number, since it uses less digits than its factorization.

428535939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186314.

The product of its digits is 1166400, while the sum is 48.

The square root of 428535939 is about 20701.1096079413. The cubic root of 428535939 is about 753.9266293435.

The spelling of 428535939 in words is "four hundred twenty-eight million, five hundred thirty-five thousand, nine hundred thirty-nine".