628479419 has 4 divisors (see below), whose sum is σ = 631109280. Its totient is φ = 625849560.

The previous prime is 628479407. The next prime is 628479421. The reversal of 628479419 is 914974826.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 914974826 = 2 ⋅457487413.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628479419 is a prime.

It is a super-2 number, since 2×628479419² = 789972760213155122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628476419) 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 in 3 ways as a sum of consecutive naturals, for example, 1314572 + ... + 1315049.

It is an arithmetic number, because the mean of its divisors is an integer number (157777320).

Almost surely, 2^628479419 is an apocalyptic number.

628479419 is a deficient number, since it is larger than the sum of its proper divisors (2629861).

628479419 is a wasteful number, since it uses less digits than its factorization.

628479419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629860.

The product of its digits is 870912, while the sum is 50.

The square root of 628479419 is about 25069.4917978008. The cubic root of 628479419 is about 856.5716309324.

The spelling of 628479419 in words is "six hundred twenty-eight million, four hundred seventy-nine thousand, four hundred nineteen".