7189397 has 4 divisors (see below), whose sum is σ = 7325100. Its totient is φ = 7053696.

The previous prime is 7189339. The next prime is 7189421. The reversal of 7189397 is 7939817.

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 6482116 + 707281 = 2546^2 + 841^2 .

It is a cyclic number.

It is not a de Polignac number, because 7189397 - 2⁶ = 7189333 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7189307) 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, 67772 + ... + 67877.

It is an arithmetic number, because the mean of its divisors is an integer number (1831275).

Almost surely, 2^7189397 is an apocalyptic number.

It is an amenable number.

7189397 is a deficient number, since it is larger than the sum of its proper divisors (135703).

7189397 is a wasteful number, since it uses less digits than its factorization.

7189397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135702.

The product of its digits is 95256, while the sum is 44.

The square root of 7189397 is about 2681.3050926741. The cubic root of 7189397 is about 193.0030425393.

The spelling of 7189397 in words is "seven million, one hundred eighty-nine thousand, three hundred ninety-seven".