7947397 has 8 divisors (see below), whose sum is σ = 8334144. Its totient is φ = 7564128.

The previous prime is 7947361. The next prime is 7947409. The reversal of 7947397 is 7937497.

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 7947397 - 2¹⁵ = 7914629 is a prime.

It is a super-2 number, since 2×7947397² = 126322238151218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7947337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4618 + ... + 6100.

It is an arithmetic number, because the mean of its divisors is an integer number (1041768).

Almost surely, 2^7947397 is an apocalyptic number.

It is an amenable number.

7947397 is a deficient number, since it is larger than the sum of its proper divisors (386747).

7947397 is a wasteful number, since it uses less digits than its factorization.

7947397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739.

The product of its digits is 333396, while the sum is 46.

The square root of 7947397 is about 2819.1128037026. The cubic root of 7947397 is about 199.5606773513.

The spelling of 7947397 in words is "seven million, nine hundred forty-seven thousand, three hundred ninety-seven".