3644408397 has 16 divisors (see below), whose sum is σ = 5794836480. Its totient is φ = 1991974512.

The previous prime is 3644408381. The next prime is 3644408407. The reversal of 3644408397 is 7938044463.

It is not a de Polignac number, because 3644408397 - 2⁴ = 3644408381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644408357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3772197 + ... + 3773162.

It is an arithmetic number, because the mean of its divisors is an integer number (362177280).

Almost surely, 2^3644408397 is an apocalyptic number.

It is an amenable number.

3644408397 is a deficient number, since it is larger than the sum of its proper divisors (2150428083).

3644408397 is a wasteful number, since it uses less digits than its factorization.

3644408397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7545392.

The product of its (nonzero) digits is 1741824, while the sum is 48.

The square root of 3644408397 is about 60368.9356954386. The cubic root of 3644408397 is about 1538.8950860308.

The spelling of 3644408397 in words is "three billion, six hundred forty-four million, four hundred eight thousand, three hundred ninety-seven".