9138373 has 4 divisors (see below), whose sum is σ = 9619360. Its totient is φ = 8657388.

The previous prime is 9138347. The next prime is 9138413. The reversal of 9138373 is 3738319.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 9138373 - 2⁵ = 9138341 is a prime.

It is a super-2 number, since 2×9138373² = 167019722174258, which contains 22 as substring.

It is a Duffinian number.

9138373 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240465 + ... + 240502.

It is an arithmetic number, because the mean of its divisors is an integer number (2404840).

Almost surely, 2^9138373 is an apocalyptic number.

It is an amenable number.

9138373 is a deficient number, since it is larger than the sum of its proper divisors (480987).

9138373 is a wasteful number, since it uses less digits than its factorization.

9138373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480986.

The product of its digits is 13608, while the sum is 34.

The square root of 9138373 is about 3022.9741977066. The cubic root of 9138373 is about 209.0689927364.

It can be divided in two parts, 91 and 38373, that multiplied together give a palindrome (3491943).

The spelling of 9138373 in words is "nine million, one hundred thirty-eight thousand, three hundred seventy-three".