4138745 has 16 divisors (see below), whose sum is σ = 5482512. Its totient is φ = 2979840.

The previous prime is 4138741. The next prime is 4138747. The reversal of 4138745 is 5478314.

It can be written as a sum of positive squares in 8 ways, for example, as 2042041 + 2096704 = 1429^2 + 1448^2 .

It is not a de Polignac number, because 4138745 - 2² = 4138741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4138741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1889 + ... + 3441.

It is an arithmetic number, because the mean of its divisors is an integer number (342657).

Almost surely, 2^4138745 is an apocalyptic number.

It is an amenable number.

4138745 is a deficient number, since it is larger than the sum of its proper divisors (1343767).

4138745 is a wasteful number, since it uses less digits than its factorization.

4138745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612.

The product of its digits is 13440, while the sum is 32.

The square root of 4138745 is about 2034.3905721370. The cubic root of 4138745 is about 160.5546505663.

The spelling of 4138745 in words is "four million, one hundred thirty-eight thousand, seven hundred forty-five".