3644920939 has 8 divisors (see below), whose sum is σ = 4043672640. Its totient is φ = 3257401800.

The previous prime is 3644920927. The next prime is 3644920943. The reversal of 3644920939 is 9390294463.

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

It is not a de Polignac number, because 3644920939 - 2⁵ = 3644920907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3644920892 and 3644920901.

It is not an unprimeable number, because it can be changed into a prime (3644920919) 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, 2807457 + ... + 2808754.

It is an arithmetic number, because the mean of its divisors is an integer number (505459080).

Almost surely, 2^3644920939 is an apocalyptic number.

3644920939 is a deficient number, since it is larger than the sum of its proper divisors (398751701).

3644920939 is a wasteful number, since it uses less digits than its factorization.

3644920939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5616281.

The product of its (nonzero) digits is 1259712, while the sum is 49.

The square root of 3644920939 is about 60373.1806268313. The cubic root of 3644920939 is about 1538.9672249814.

The spelling of 3644920939 in words is "three billion, six hundred forty-four million, nine hundred twenty thousand, nine hundred thirty-nine".