428842619 has 2 divisors, whose sum is σ = 428842620. Its totient is φ = 428842618.

The previous prime is 428842541. The next prime is 428842681. The reversal of 428842619 is 916248824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428842619 - 2⁸ = 428842363 is a prime.

It is a super-2 number, since 2×428842619² = 367811983741558322, which contains 22 as substring.

It is equal to p_22789916 and since 428842619 and 22789916 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 428842619.

It is not a weakly prime, because it can be changed into another prime (428842699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214421309 + 214421310.

It is an arithmetic number, because the mean of its divisors is an integer number (214421310).

Almost surely, 2^428842619 is an apocalyptic number.

428842619 is a deficient number, since it is larger than the sum of its proper divisors (1).

428842619 is an equidigital number, since it uses as much as digits as its factorization.

428842619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 44.

The square root of 428842619 is about 20708.5156155626. The cubic root of 428842619 is about 754.1064346322.

The spelling of 428842619 in words is "four hundred twenty-eight million, eight hundred forty-two thousand, six hundred nineteen".