7790397 has 4 divisors (see below), whose sum is σ = 10387200. Its totient is φ = 5193596.

The previous prime is 7790359. The next prime is 7790401. The reversal of 7790397 is 7930977.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7930977 = 3 ⋅2643659.

It is a cyclic number.

It is not a de Polignac number, because 7790397 - 2¹¹ = 7788349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7790327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1298397 + ... + 1298402.

It is an arithmetic number, because the mean of its divisors is an integer number (2596800).

Almost surely, 2^7790397 is an apocalyptic number.

It is an amenable number.

7790397 is a deficient number, since it is larger than the sum of its proper divisors (2596803).

7790397 is a wasteful number, since it uses less digits than its factorization.

7790397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596802.

The product of its (nonzero) digits is 83349, while the sum is 42.

The square root of 7790397 is about 2791.1282664901. The cubic root of 7790397 is about 198.2378276767.

The spelling of 7790397 in words is "seven million, seven hundred ninety thousand, three hundred ninety-seven".