7991275403 has 2 divisors, whose sum is σ = 7991275404. Its totient is φ = 7991275402.

The previous prime is 7991275399. The next prime is 7991275421. The reversal of 7991275403 is 3045721997.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7991275403 - 2² = 7991275399 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (7991275603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3995637701 + 3995637702.

It is an arithmetic number, because the mean of its divisors is an integer number (3995637702).

Almost surely, 2^7991275403 is an apocalyptic number.

7991275403 is a deficient number, since it is larger than the sum of its proper divisors (1).

7991275403 is an equidigital number, since it uses as much as digits as its factorization.

7991275403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 47.

The square root of 7991275403 is about 89393.9338154441. The cubic root of 7991275403 is about 1999.2726857891.

The spelling of 7991275403 in words is "seven billion, nine hundred ninety-one million, two hundred seventy-five thousand, four hundred three".