7975397 has 4 divisors (see below), whose sum is σ = 8444556. Its totient is φ = 7506240.

The previous prime is 7975369. The next prime is 7975399. The reversal of 7975397 is 7935797.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7935797 = 37 ⋅214481.

It can be written as a sum of positive squares in 2 ways, for example, as 6895876 + 1079521 = 2626^2 + 1039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7975397 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 (7975399) 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, 234554 + ... + 234587.

It is an arithmetic number, because the mean of its divisors is an integer number (2111139).

Almost surely, 2^7975397 is an apocalyptic number.

It is an amenable number.

7975397 is a deficient number, since it is larger than the sum of its proper divisors (469159).

7975397 is a wasteful number, since it uses less digits than its factorization.

7975397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469158.

The product of its digits is 416745, while the sum is 47.

The square root of 7975397 is about 2824.0745386763. The cubic root of 7975397 is about 199.7947644639.

The spelling of 7975397 in words is "seven million, nine hundred seventy-five thousand, three hundred ninety-seven".