7239397 has 4 divisors (see below), whose sum is σ = 7897536. Its totient is φ = 6581260.

The previous prime is 7239391. The next prime is 7239409. The reversal of 7239397 is 7939327.

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 a cyclic number.

It is not a de Polignac number, because 7239397 - 2³ = 7239389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7239391) 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, 329053 + ... + 329074.

It is an arithmetic number, because the mean of its divisors is an integer number (1974384).

Almost surely, 2^7239397 is an apocalyptic number.

It is an amenable number.

7239397 is a deficient number, since it is larger than the sum of its proper divisors (658139).

7239397 is a wasteful number, since it uses less digits than its factorization.

7239397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658138.

The product of its digits is 71442, while the sum is 40.

The square root of 7239397 is about 2690.6127554890. The cubic root of 7239397 is about 193.4494344924.

The spelling of 7239397 in words is "seven million, two hundred thirty-nine thousand, three hundred ninety-seven".