3644430393 has 8 divisors (see below), whose sum is σ = 4878601056. Its totient is φ = 2419940000.

The previous prime is 3644430389. The next prime is 3644430469. The reversal of 3644430393 is 3930344463.

3644430393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3644430393 - 2² = 3644430389 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3644430313) 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, 2419188 + ... + 2420693.

It is an arithmetic number, because the mean of its divisors is an integer number (609825132).

Almost surely, 2^3644430393 is an apocalyptic number.

It is an amenable number.

3644430393 is a deficient number, since it is larger than the sum of its proper divisors (1234170663).

3644430393 is a wasteful number, since it uses less digits than its factorization.

3644430393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4840135.

The product of its (nonzero) digits is 279936, while the sum is 39.

The square root of 3644430393 is about 60369.1178749532. The cubic root of 3644430393 is about 1538.8981820493.

The spelling of 3644430393 in words is "three billion, six hundred forty-four million, four hundred thirty thousand, three hundred ninety-three".