403248779 has 2 divisors, whose sum is σ = 403248780. Its totient is φ = 403248778.

The previous prime is 403248773. The next prime is 403248793. The reversal of 403248779 is 977842304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 403248779 - 2²⁸ = 134813323 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (403248773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201624389 + 201624390.

It is an arithmetic number, because the mean of its divisors is an integer number (201624390).

Almost surely, 2^403248779 is an apocalyptic number.

403248779 is a deficient number, since it is larger than the sum of its proper divisors (1).

403248779 is an equidigital number, since it uses as much as digits as its factorization.

403248779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 403248779 is about 20081.0552262574. The cubic root of 403248779 is about 738.7956908609.

The spelling of 403248779 in words is "four hundred three million, two hundred forty-eight thousand, seven hundred seventy-nine".