628443479 has 4 divisors (see below), whose sum is σ = 634544976. Its totient is φ = 622341984.

The previous prime is 628443469. The next prime is 628443493. The reversal of 628443479 is 974344826.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 628443479 - 2²⁸ = 360008023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628443469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3050594 + ... + 3050799.

It is an arithmetic number, because the mean of its divisors is an integer number (158636244).

Almost surely, 2^628443479 is an apocalyptic number.

628443479 is a deficient number, since it is larger than the sum of its proper divisors (6101497).

628443479 is a wasteful number, since it uses less digits than its factorization.

628443479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6101496.

The product of its digits is 1161216, while the sum is 47.

The square root of 628443479 is about 25068.7749800424. The cubic root of 628443479 is about 856.5553027545. Note that the first 3 decimals are identical.

The spelling of 628443479 in words is "six hundred twenty-eight million, four hundred forty-three thousand, four hundred seventy-nine".