464840 has 16 divisors (see below), whose sum is σ = 1045980. Its totient is φ = 185920.

The previous prime is 464819. The next prime is 464843. The reversal of 464840 is 48464.

It can be written as a sum of positive squares in 2 ways, for example, as 417316 + 47524 = 646^2 + 218^2 .

It is not an unprimeable number, because it can be changed into a prime (464843) by changing a digit.

464840 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5771 + ... + 5850.

2⁴⁶⁴⁸⁴⁰ is an apocalyptic number.

464840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

464840 is an abundant number, since it is smaller than the sum of its proper divisors (581140).

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

464840 is a wasteful number, since it uses less digits than its factorization.

464840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11632 (or 11628 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 464840 is about 681.7917570637. The cubic root of 464840 is about 77.4642221260.

The spelling of 464840 in words is "four hundred sixty-four thousand, eight hundred forty".