505945438 has 8 divisors (see below), whose sum is σ = 759114432. Its totient is φ = 252907296.

The previous prime is 505945423. The next prime is 505945441. The reversal of 505945438 is 834549505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 505945394 and 505945403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22395 + ... + 38902.

It is an arithmetic number, because the mean of its divisors is an integer number (94889304).

Almost surely, 2^505945438 is an apocalyptic number.

505945438 is a deficient number, since it is larger than the sum of its proper divisors (253168994).

505945438 is a wasteful number, since it uses less digits than its factorization.

505945438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65426.

The product of its (nonzero) digits is 432000, while the sum is 43.

The square root of 505945438 is about 22493.2309373287. The cubic root of 505945438 is about 796.8340699275.

The spelling of 505945438 in words is "five hundred five million, nine hundred forty-five thousand, four hundred thirty-eight".