405223982 has 16 divisors (see below), whose sum is σ = 667647360. Its totient is φ = 183602232.

The previous prime is 405223969. The next prime is 405223993. The reversal of 405223982 is 289322504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230948 + ... + 232695.

It is an arithmetic number, because the mean of its divisors is an integer number (41727960).

Almost surely, 2^405223982 is an apocalyptic number.

405223982 is a deficient number, since it is larger than the sum of its proper divisors (262423378).

405223982 is a wasteful number, since it uses less digits than its factorization.

405223982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463687.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 405223982 is about 20130.1759058385. The cubic root of 405223982 is about 739.9999890431. Note that the first 4 decimals are identical.

The spelling of 405223982 in words is "four hundred five million, two hundred twenty-three thousand, nine hundred eighty-two".