405133988 has 12 divisors (see below), whose sum is σ = 810268032. Its totient is φ = 173628840.

The previous prime is 405133933. The next prime is 405133999. The reversal of 405133988 is 889331504.

405133988 is an admirable number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7234508 + ... + 7234563.

It is an arithmetic number, because the mean of its divisors is an integer number (67522336).

Almost surely, 2^405133988 is an apocalyptic number.

It is an amenable number.

405133988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405133988 is a wasteful number, since it uses less digits than its factorization.

405133988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14469082 (or 14469080 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 405133988 is about 20127.9404808341. The cubic root of 405133988 is about 739.9452041237.

The spelling of 405133988 in words is "four hundred five million, one hundred thirty-three thousand, nine hundred eighty-eight".