3897834243 has 8 divisors (see below), whose sum is σ = 5211590400. Its totient is φ = 2591317128.

The previous prime is 3897834163. The next prime is 3897834251. The reversal of 3897834243 is 3424387983.

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

It is a de Polignac number, because none of the positive numbers 2^k-3897834243 is a prime.

It is a super-2 number, since 2×3897834243² = 30386223571806766098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3897834643) 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, 1808503 + ... + 1810656.

It is an arithmetic number, because the mean of its divisors is an integer number (651448800).

Almost surely, 2^3897834243 is an apocalyptic number.

3897834243 is a deficient number, since it is larger than the sum of its proper divisors (1313756157).

3897834243 is a wasteful number, since it uses less digits than its factorization.

3897834243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3619521.

The product of its digits is 3483648, while the sum is 51.

The square root of 3897834243 is about 62432.6376425023. The cubic root of 3897834243 is about 1573.7694922997.

The spelling of 3897834243 in words is "three billion, eight hundred ninety-seven million, eight hundred thirty-four thousand, two hundred forty-three".