3997922 has 4 divisors (see below), whose sum is σ = 5996886. Its totient is φ = 1998960.

The previous prime is 3997921. The next prime is 3997927. The reversal of 3997922 is 2297993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2297993 = 19 ⋅120947.

It can be written as a sum of positive squares in only one way, i.e., 3418801 + 579121 = 1849^2 + 761^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3997922.

It is not an unprimeable number, because it can be changed into a prime (3997921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999479 + ... + 999482.

Almost surely, 2^3997922 is an apocalyptic number.

3997922 is a deficient number, since it is larger than the sum of its proper divisors (1998964).

3997922 is a wasteful number, since it uses less digits than its factorization.

3997922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998963.

The product of its digits is 61236, while the sum is 41.

The square root of 3997922 is about 1999.4804325124. The cubic root of 3997922 is about 158.7126119405.

The spelling of 3997922 in words is "three million, nine hundred ninety-seven thousand, nine hundred twenty-two".