3967549838 has 32 divisors (see below), whose sum is σ = 6952089600. Its totient is φ = 1662796224.

The previous prime is 3967549837. The next prime is 3967549871. The reversal of 3967549838 is 8389457693.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3967549837) 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, 1234778 + ... + 1237986.

It is an arithmetic number, because the mean of its divisors is an integer number (217252800).

Almost surely, 2^3967549838 is an apocalyptic number.

3967549838 is a deficient number, since it is larger than the sum of its proper divisors (2984539762).

3967549838 is a wasteful number, since it uses less digits than its factorization.

3967549838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5144.

The product of its digits is 39191040, while the sum is 62.

The square root of 3967549838 is about 62988.4897262984. The cubic root of 3967549838 is about 1583.0967729117.

The spelling of 3967549838 in words is "three billion, nine hundred sixty-seven million, five hundred forty-nine thousand, eight hundred thirty-eight".