4138973 has 4 divisors (see below), whose sum is σ = 4382460. Its totient is φ = 3895488.

The previous prime is 4138969. The next prime is 4138987. The reversal of 4138973 is 3798314.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1909924 + 2229049 = 1382^2 + 1493^2 .

It is a cyclic number.

It is not a de Polignac number, because 4138973 - 2² = 4138969 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121718 + ... + 121751.

It is an arithmetic number, because the mean of its divisors is an integer number (1095615).

Almost surely, 2^4138973 is an apocalyptic number.

It is an amenable number.

4138973 is a deficient number, since it is larger than the sum of its proper divisors (243487).

4138973 is a wasteful number, since it uses less digits than its factorization.

4138973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243486.

The product of its digits is 18144, while the sum is 35.

The square root of 4138973 is about 2034.4466078027. The cubic root of 4138973 is about 160.5575987859.

The spelling of 4138973 in words is "four million, one hundred thirty-eight thousand, nine hundred seventy-three".