450493686 has 48 divisors (see below), whose sum is σ = 1072131840. Its totient is φ = 136073520.

The previous prime is 450493669. The next prime is 450493697. The reversal of 450493686 is 686394054.

It is a super-4 number, since 4×450493686⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20770 + ... + 36501.

It is an arithmetic number, because the mean of its divisors is an integer number (22336080).

Almost surely, 2^450493686 is an apocalyptic number.

450493686 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

450493686 is an abundant number, since it is smaller than the sum of its proper divisors (621638154).

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

450493686 is a wasteful number, since it uses less digits than its factorization.

450493686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57321 (or 57318 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 450493686 is about 21224.8365364730. The cubic root of 450493686 is about 766.5895642269.

The spelling of 450493686 in words is "four hundred fifty million, four hundred ninety-three thousand, six hundred eighty-six".