7938397 has 2 divisors, whose sum is σ = 7938398.
Its totient is φ = 7938396.
The previous prime is 7938349. The next prime is 7938407.
7938397 is nontrivially palindromic in base 10.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 7080921 + 857476 = 2661^2 + 926^2
It is a palprime.
It is a cyclic number.
It is not a de Polignac number, because 7938397 - 211 = 7936349 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (7938317) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3969198 + 3969199.
It is an arithmetic number, because the mean of its divisors is an integer number (3969199).
Almost surely, 27938397 is an apocalyptic number.
It is an amenable number.
7938397 is a deficient number, since it is larger than the sum of its proper divisors (1).
7938397 is an equidigital number, since it uses as much as digits as its factorization.
7938397 is an evil number, because the sum of its binary digits is even.
The product of its digits is 285768, while the sum is 46.
The square root of 7938397 is about 2817.5161046567.
The cubic root of 7938397 is about 199.4853183166.
The spelling of 7938397 in words is "seven million, nine hundred thirty-eight thousand, three hundred ninety-seven".