405442366 has 48 divisors (see below), whose sum is σ = 734320512. Its totient is φ = 167227200.

The previous prime is 405442363. The next prime is 405442369. The reversal of 405442366 is 663244504.

It is an interprime number because it is at equal distance from previous prime (405442363) and next prime (405442369).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405442361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 962836 + ... + 963256.

It is an arithmetic number, because the mean of its divisors is an integer number (15298344).

Almost surely, 2^405442366 is an apocalyptic number.

405442366 is a deficient number, since it is larger than the sum of its proper divisors (328878146).

405442366 is a wasteful number, since it uses less digits than its factorization.

405442366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 405442366 is about 20135.5994695961. The cubic root of 405442366 is about 740.1328991889.

The spelling of 405442366 in words is "four hundred five million, four hundred forty-two thousand, three hundred sixty-six".