3897830305 has 16 divisors (see below), whose sum is σ = 4810749840. Its totient is φ = 3029605632.

The previous prime is 3897830239. The next prime is 3897830311. The reversal of 3897830305 is 5030387983.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 81432576 + 3816397729 = 9024^2 + 61777^2 .

It is a cyclic number.

It is not a de Polignac number, because 3897830305 - 2⁷ = 3897830177 is a prime.

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, 116307 + ... + 146023.

It is an arithmetic number, because the mean of its divisors is an integer number (300671865).

Almost surely, 2^3897830305 is an apocalyptic number.

It is an amenable number.

3897830305 is a deficient number, since it is larger than the sum of its proper divisors (912919535).

3897830305 is a wasteful number, since it uses less digits than its factorization.

3897830305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30468.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 3897830305 is about 62432.6061045028. The cubic root of 3897830305 is about 1573.7689623040.

The spelling of 3897830305 in words is "three billion, eight hundred ninety-seven million, eight hundred thirty thousand, three hundred five".