3994137 has 24 divisors (see below), whose sum is σ = 6885600. Its totient is φ = 2281608.

The previous prime is 3994121. The next prime is 3994147. The reversal of 3994137 is 7314993.

It is not a de Polignac number, because 3994137 - 2⁴ = 3994121 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

3994137 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3994147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187 + ... + 2832.

It is an arithmetic number, because the mean of its divisors is an integer number (286900).

Almost surely, 2^3994137 is an apocalyptic number.

It is an amenable number.

3994137 is a deficient number, since it is larger than the sum of its proper divisors (2891463).

3994137 is a wasteful number, since it uses less digits than its factorization.

3994137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042 (or 3029 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 3994137 is about 1998.5337125002. The cubic root of 3994137 is about 158.6625095028.

The spelling of 3994137 in words is "three million, nine hundred ninety-four thousand, one hundred thirty-seven".