4138994 has 4 divisors (see below), whose sum is σ = 6208494. Its totient is φ = 2069496.

The previous prime is 4138993. The next prime is 4138997. The reversal of 4138994 is 4998314.

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., 3822025 + 316969 = 1955^2 + 563^2 .

It is not an unprimeable number, because it can be changed into a prime (4138993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1034747 + ... + 1034750.

Almost surely, 2^4138994 is an apocalyptic number.

4138994 is a deficient number, since it is larger than the sum of its proper divisors (2069500).

4138994 is a wasteful number, since it uses less digits than its factorization.

4138994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069499.

The product of its digits is 31104, while the sum is 38.

The square root of 4138994 is about 2034.4517689048. The cubic root of 4138994 is about 160.5578703270.

The spelling of 4138994 in words is "four million, one hundred thirty-eight thousand, nine hundred ninety-four".