4147994 has 4 divisors (see below), whose sum is σ = 6221994. Its totient is φ = 2073996.

The previous prime is 4147991. The next prime is 4148003. The reversal of 4147994 is 4997414.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4997414 = 2 ⋅2498707.

It can be written as a sum of positive squares in only one way, i.e., 2739025 + 1408969 = 1655^2 + 1187^2 .

It is not an unprimeable number, because it can be changed into a prime (4147991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1036997 + ... + 1037000.

Almost surely, 2^4147994 is an apocalyptic number.

4147994 is a deficient number, since it is larger than the sum of its proper divisors (2074000).

4147994 is a wasteful number, since it uses less digits than its factorization.

4147994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073999.

The product of its digits is 36288, while the sum is 38.

The square root of 4147994 is about 2036.6624658986. The cubic root of 4147994 is about 160.6741606402.

The spelling of 4147994 in words is "four million, one hundred forty-seven thousand, nine hundred ninety-four".