405128933 has 12 divisors (see below), whose sum is σ = 446918304. Its totient is φ = 366966600.

The previous prime is 405128917. The next prime is 405128951. The reversal of 405128933 is 339821504.

It is not a de Polignac number, because 405128933 - 2⁴ = 405128917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405128893 and 405128902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405128993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28328 + ... + 40158.

It is an arithmetic number, because the mean of its divisors is an integer number (37243192).

Almost surely, 2^405128933 is an apocalyptic number.

It is an amenable number.

405128933 is a deficient number, since it is larger than the sum of its proper divisors (41789371).

405128933 is a wasteful number, since it uses less digits than its factorization.

405128933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12136 (or 12125 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 405128933 is about 20127.8149087277. The cubic root of 405128933 is about 739.9421265916.

The spelling of 405128933 in words is "four hundred five million, one hundred twenty-eight thousand, nine hundred thirty-three".