505309446 has 24 divisors (see below), whose sum is σ = 1152460920. Its totient is φ = 159571296.

The previous prime is 505309433. The next prime is 505309457. The reversal of 505309446 is 644903505.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 505309446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 738415 + ... + 739098.

It is an arithmetic number, because the mean of its divisors is an integer number (48019205).

Almost surely, 2^505309446 is an apocalyptic number.

505309446 is an abundant number, since it is smaller than the sum of its proper divisors (647151474).

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

505309446 is a wasteful number, since it uses less digits than its factorization.

505309446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477540 (or 1477537 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 505309446 is about 22479.0890829678. The cubic root of 505309446 is about 796.5000466968.

The spelling of 505309446 in words is "five hundred five million, three hundred nine thousand, four hundred forty-six".