3978593 has 2 divisors, whose sum is σ = 3978594.
Its totient is φ = 3978592.
The previous prime is 3978587. The next prime is 3978641. The reversal of 3978593 is 3958793.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 2521744 + 1456849 = 1588^2 + 1207^2
It is a cyclic number.
It is not a de Polignac number, because 3978593 - 210 = 3977569 is a prime.
It is not a weakly prime, because it can be changed into another prime (3978523) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1989296 + 1989297.
It is an arithmetic number, because the mean of its divisors is an integer number (1989297).
Almost surely, 23978593 is an apocalyptic number.
It is an amenable number.
3978593 is a deficient number, since it is larger than the sum of its proper divisors (1).
3978593 is an equidigital number, since it uses as much as digits as its factorization.
3978593 is an evil number, because the sum of its binary digits is even.
The product of its digits is 204120, while the sum is 44.
The square root of 3978593 is about 1994.6410704686.
The cubic root of 3978593 is about 158.4564194022.
The spelling of 3978593 in words is "three million, nine hundred seventy-eight thousand, five hundred ninety-three".