3897137389 has 4 divisors (see below), whose sum is σ = 3952026720. Its totient is φ = 3842248060.

The previous prime is 3897137383. The next prime is 3897137393. The reversal of 3897137389 is 9837317983.

3897137389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3897137389 - 2²⁷ = 3762919661 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897137383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27444559 + ... + 27444700.

It is an arithmetic number, because the mean of its divisors is an integer number (988006680).

Almost surely, 2^3897137389 is an apocalyptic number.

It is an amenable number.

3897137389 is a deficient number, since it is larger than the sum of its proper divisors (54889331).

3897137389 is an equidigital number, since it uses as much as digits as its factorization.

3897137389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54889330.

The product of its digits is 6858432, while the sum is 58.

The square root of 3897137389 is about 62427.0565460202. The cubic root of 3897137389 is about 1573.6757006487.

The spelling of 3897137389 in words is "three billion, eight hundred ninety-seven million, one hundred thirty-seven thousand, three hundred eighty-nine".