7138937 has 4 divisors (see below), whose sum is σ = 7688100. Its totient is φ = 6589776.

The previous prime is 7138931. The next prime is 7138949. The reversal of 7138937 is 7398317.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7398317 = 47 ⋅157411.

It can be written as a sum of positive squares in 2 ways, for example, as 1301881 + 5837056 = 1141^2 + 2416^2 .

It is a cyclic number.

It is not a de Polignac number, because 7138937 - 2¹⁰ = 7137913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7138937.

It is not an unprimeable number, because it can be changed into a prime (7138931) 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, 274562 + ... + 274587.

It is an arithmetic number, because the mean of its divisors is an integer number (1922025).

Almost surely, 2^7138937 is an apocalyptic number.

It is an amenable number.

7138937 is a deficient number, since it is larger than the sum of its proper divisors (549163).

7138937 is a wasteful number, since it uses less digits than its factorization.

7138937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549162.

The product of its digits is 31752, while the sum is 38.

The square root of 7138937 is about 2671.8789268977. The cubic root of 7138937 is about 192.5504404841.

The spelling of 7138937 in words is "seven million, one hundred thirty-eight thousand, nine hundred thirty-seven".