505902984 has 32 divisors (see below), whose sum is σ = 1272822720. Its totient is φ = 167558976.

The previous prime is 505902979. The next prime is 505902989. The reversal of 505902984 is 489209505.

It is an interprime number because it is at equal distance from previous prime (505902979) and next prime (505902989).

It is not an unprimeable number, because it can be changed into a prime (505902989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63364 + ... + 70899.

It is an arithmetic number, because the mean of its divisors is an integer number (39775710).

Almost surely, 2^505902984 is an apocalyptic number.

It is an amenable number.

505902984 is an abundant number, since it is smaller than the sum of its proper divisors (766919736).

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

505902984 is a wasteful number, since it uses less digits than its factorization.

505902984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134429 (or 134425 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 505902984 is about 22492.2872113976. The cubic root of 505902984 is about 796.8117817930.

The spelling of 505902984 in words is "five hundred five million, nine hundred two thousand, nine hundred eighty-four".