505838490 has 16 divisors (see below), whose sum is σ = 1214012448. Its totient is φ = 134890256.

The previous prime is 505838467. The next prime is 505838533. The reversal of 505838490 is 94838505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8430612 + ... + 8430671.

It is an arithmetic number, because the mean of its divisors is an integer number (75875778).

Almost surely, 2^505838490 is an apocalyptic number.

505838490 is an abundant number, since it is smaller than the sum of its proper divisors (708173958).

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

505838490 is a wasteful number, since it uses less digits than its factorization.

505838490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16861293.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 505838490 is about 22490.8534742459. The cubic root of 505838490 is about 796.7779203844. Note that the first 3 decimals are identical.

The spelling of 505838490 in words is "five hundred five million, eight hundred thirty-eight thousand, four hundred ninety".