7983457 has 2 divisors, whose sum is σ = 7983458. Its totient is φ = 7983456.

The previous prime is 7983449. The next prime is 7983463. The reversal of 7983457 is 7543897.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4157521 + 3825936 = 2039^2 + 1956^2 .

It is a cyclic number.

It is not a de Polignac number, because 7983457 - 2³ = 7983449 is a prime.

7983457 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (7983257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3991728 + 3991729.

It is an arithmetic number, because the mean of its divisors is an integer number (3991729).

Almost surely, 2^7983457 is an apocalyptic number.

It is an amenable number.

7983457 is a deficient number, since it is larger than the sum of its proper divisors (1).

7983457 is an equidigital number, since it uses as much as digits as its factorization.

7983457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 7983457 is about 2825.5011944786. The cubic root of 7983457 is about 199.8620465327.

Subtracting from 7983457 its product of digits (211680), we obtain a palindrome (7771777).

The spelling of 7983457 in words is "seven million, nine hundred eighty-three thousand, four hundred fifty-seven".