3938212822 has 4 divisors (see below), whose sum is σ = 5907319236. Its totient is φ = 1969106410.

The previous prime is 3938212763. The next prime is 3938212829. The reversal of 3938212822 is 2282128393.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3938212829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984553204 + ... + 984553207.

It is an arithmetic number, because the mean of its divisors is an integer number (1476829809).

Almost surely, 2^3938212822 is an apocalyptic number.

3938212822 is a deficient number, since it is larger than the sum of its proper divisors (1969106414).

3938212822 is a wasteful number, since it uses less digits than its factorization.

3938212822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969106413.

The product of its digits is 82944, while the sum is 40.

The square root of 3938212822 is about 62755.1816346666. The cubic root of 3938212822 is about 1579.1851834016.

The spelling of 3938212822 in words is "three billion, nine hundred thirty-eight million, two hundred twelve thousand, eight hundred twenty-two".