7913749 has 2 divisors, whose sum is σ = 7913750. Its totient is φ = 7913748.

The previous prime is 7913701. The next prime is 7913753. The reversal of 7913749 is 9473197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6036849 + 1876900 = 2457^2 + 1370^2 .

It is a cyclic number.

It is not a de Polignac number, because 7913749 - 2⁹ = 7913237 is a prime.

7913749 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7914749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3956874 + 3956875.

It is an arithmetic number, because the mean of its divisors is an integer number (3956875).

Almost surely, 2^7913749 is an apocalyptic number.

It is an amenable number.

7913749 is a deficient number, since it is larger than the sum of its proper divisors (1).

7913749 is an equidigital number, since it uses as much as digits as its factorization.

7913749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 40.

The square root of 7913749 is about 2813.1386386028. The cubic root of 7913749 is about 199.2786430152.

The spelling of 7913749 in words is "seven million, nine hundred thirteen thousand, seven hundred forty-nine".