505999946 has 16 divisors (see below), whose sum is σ = 796897440. Its totient is φ = 240628080.

The previous prime is 505999939. The next prime is 505999961. The reversal of 505999946 is 649999505.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 505999891 and 505999900.

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, 61220 + ... + 68991.

It is an arithmetic number, because the mean of its divisors is an integer number (49806090).

Almost surely, 2^505999946 is an apocalyptic number.

505999946 is a deficient number, since it is larger than the sum of its proper divisors (290897494).

505999946 is a wasteful number, since it uses less digits than its factorization.

505999946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130309.

The product of its (nonzero) digits is 3936600, while the sum is 56.

The square root of 505999946 is about 22494.4425581075. The cubic root of 505999946 is about 796.8626845227.

The spelling of 505999946 in words is "five hundred five million, nine hundred ninety-nine thousand, nine hundred forty-six".