464551440 has 40 divisors (see below), whose sum is σ = 1440110208. Its totient is φ = 123880320.

The previous prime is 464551397. The next prime is 464551441. The reversal of 464551440 is 44155464.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (464551441) 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, 967576 + ... + 968055.

Almost surely, 2^464551440 is an apocalyptic number.

464551440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

464551440 is an abundant number, since it is smaller than the sum of its proper divisors (975558768).

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

464551440 is a wasteful number, since it uses less digits than its factorization.

464551440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935647 (or 1935641 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 464551440 is about 21553.4554074283. The cubic root of 464551440 is about 774.4818958223.

It can be divided in two parts, 46455 and 1440, that added together give a triangular number (47895 = T₃₀₉).

The spelling of 464551440 in words is "four hundred sixty-four million, five hundred fifty-one thousand, four hundred forty".