3999122 has 4 divisors (see below), whose sum is σ = 5998686. Its totient is φ = 1999560.

The previous prime is 3999113. The next prime is 3999143. The reversal of 3999122 is 2219993.

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

It can be written as a sum of positive squares in only one way, i.e., 3806401 + 192721 = 1951^2 + 439^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999779 + ... + 999782.

Almost surely, 2^3999122 is an apocalyptic number.

3999122 is a deficient number, since it is larger than the sum of its proper divisors (1999564).

3999122 is a wasteful number, since it uses less digits than its factorization.

3999122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999563.

The product of its digits is 8748, while the sum is 35.

The square root of 3999122 is about 1999.7804879536. The cubic root of 3999122 is about 158.7284898626.

The spelling of 3999122 in words is "three million, nine hundred ninety-nine thousand, one hundred twenty-two".