7138897 has 8 divisors (see below), whose sum is σ = 7400192. Its totient is φ = 6879600.

The previous prime is 7138883. The next prime is 7138919. The reversal of 7138897 is 7988317.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7138897 - 2¹⁹ = 6614609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7138867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12778 + ... + 13324.

It is an arithmetic number, because the mean of its divisors is an integer number (925024).

Almost surely, 2^7138897 is an apocalyptic number.

It is an amenable number.

7138897 is a deficient number, since it is larger than the sum of its proper divisors (261295).

7138897 is a wasteful number, since it uses less digits than its factorization.

7138897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999.

The product of its digits is 84672, while the sum is 43.

The square root of 7138897 is about 2671.8714415181. The cubic root of 7138897 is about 192.5500808586.

It can be divided in two parts, 7 and 138897, that multiplied together give a palindrome (972279).

The spelling of 7138897 in words is "seven million, one hundred thirty-eight thousand, eight hundred ninety-seven".