7738397 has 2 divisors, whose sum is σ = 7738398. Its totient is φ = 7738396.

The previous prime is 7738391. The next prime is 7738411. The reversal of 7738397 is 7938377.

It is a happy number.

7738397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6497401 + 1240996 = 2549^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 7738397 - 2⁸ = 7738141 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7738391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3869198 + 3869199.

It is an arithmetic number, because the mean of its divisors is an integer number (3869199).

Almost surely, 2^7738397 is an apocalyptic number.

It is an amenable number.

7738397 is a deficient number, since it is larger than the sum of its proper divisors (1).

7738397 is an equidigital number, since it uses as much as digits as its factorization.

7738397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 222264, while the sum is 44.

The square root of 7738397 is about 2781.7974405050. The cubic root of 7738397 is about 197.7957711213.

The spelling of 7738397 in words is "seven million, seven hundred thirty-eight thousand, three hundred ninety-seven".