464388644 has 6 divisors (see below), whose sum is σ = 812680134. Its totient is φ = 232194320.

The previous prime is 464388601. The next prime is 464388647. The reversal of 464388644 is 446883464.

It can be written as a sum of positive squares in only one way, i.e., 394499044 + 69889600 = 19862^2 + 8360^2 .

It is not an unprimeable number, because it can be changed into a prime (464388647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58048577 + ... + 58048584.

It is an arithmetic number, because the mean of its divisors is an integer number (135446689).

Almost surely, 2^464388644 is an apocalyptic number.

It is an amenable number.

464388644 is a deficient number, since it is larger than the sum of its proper divisors (348291490).

464388644 is a wasteful number, since it uses less digits than its factorization.

464388644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116097165 (or 116097163 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 47.

The square root of 464388644 is about 21549.6785126832. The cubic root of 464388644 is about 774.3914162222.

The spelling of 464388644 in words is "four hundred sixty-four million, three hundred eighty-eight thousand, six hundred forty-four".