3938171249 has 16 divisors (see below), whose sum is σ = 4203809280. Its totient is φ = 3678716160.

The previous prime is 3938171233. The next prime is 3938171269. The reversal of 3938171249 is 9421718393.

It is not a de Polignac number, because 3938171249 - 2⁴ = 3938171233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3938171269) 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, 418304 + ... + 427614.

It is an arithmetic number, because the mean of its divisors is an integer number (262738080).

Almost surely, 2^3938171249 is an apocalyptic number.

It is an amenable number.

3938171249 is a deficient number, since it is larger than the sum of its proper divisors (265638031).

3938171249 is a wasteful number, since it uses less digits than its factorization.

3938171249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9640.

The product of its digits is 326592, while the sum is 47.

The square root of 3938171249 is about 62754.8504021801. The cubic root of 3938171249 is about 1579.1796265920.

The spelling of 3938171249 in words is "three billion, nine hundred thirty-eight million, one hundred seventy-one thousand, two hundred forty-nine".