3644424408 has 64 divisors (see below), whose sum is σ = 9350732160. Its totient is φ = 1183021056.

The previous prime is 3644424389. The next prime is 3644424431. The reversal of 3644424408 is 8044244463.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353016 + ... + 363192.

It is an arithmetic number, because the mean of its divisors is an integer number (146105190).

Almost surely, 2^3644424408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3644424408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4675366080).

3644424408 is an abundant number, since it is smaller than the sum of its proper divisors (5706307752).

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

3644424408 is a wasteful number, since it uses less digits than its factorization.

3644424408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10576 (or 10572 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 39.

The square root of 3644424408 is about 60369.0683048861. The cubic root of 3644424408 is about 1538.8973396396.

The spelling of 3644424408 in words is "three billion, six hundred forty-four million, four hundred twenty-four thousand, four hundred eight".