428619379 has 2 divisors, whose sum is σ = 428619380. Its totient is φ = 428619378.

The previous prime is 428619343. The next prime is 428619407. The reversal of 428619379 is 973916824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428619379 - 2²⁷ = 294401651 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (428619479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214309689 + 214309690.

It is an arithmetic number, because the mean of its divisors is an integer number (214309690).

Almost surely, 2^428619379 is an apocalyptic number.

428619379 is a deficient number, since it is larger than the sum of its proper divisors (1).

428619379 is an equidigital number, since it uses as much as digits as its factorization.

428619379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The square root of 428619379 is about 20703.1248607547. The cubic root of 428619379 is about 753.9755583828.

The spelling of 428619379 in words is "four hundred twenty-eight million, six hundred nineteen thousand, three hundred seventy-nine".