428440763 has 2 divisors, whose sum is σ = 428440764. Its totient is φ = 428440762.

The previous prime is 428440697. The next prime is 428440781. The reversal of 428440763 is 367044824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428440763 - 2¹⁴ = 428424379 is a prime.

It is a super-2 number, since 2×428440763² = 367122974800044338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (428446763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214220381 + 214220382.

It is an arithmetic number, because the mean of its divisors is an integer number (214220382).

Almost surely, 2^428440763 is an apocalyptic number.

428440763 is a deficient number, since it is larger than the sum of its proper divisors (1).

428440763 is an equidigital number, since it uses as much as digits as its factorization.

428440763 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 38.

The square root of 428440763 is about 20698.8106663161. The cubic root of 428440763 is about 753.8708105838.

The spelling of 428440763 in words is "four hundred twenty-eight million, four hundred forty thousand, seven hundred sixty-three".