628309339 has 8 divisors (see below), whose sum is σ = 722824448. Its totient is φ = 534983400.

The previous prime is 628309337. The next prime is 628309351. The reversal of 628309339 is 933903826.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 628309339 - 2¹ = 628309337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 628309295 and 628309304.

It is not an unprimeable number, because it can be changed into a prime (628309337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296157 + ... + 298270.

It is an arithmetic number, because the mean of its divisors is an integer number (90353056).

Almost surely, 2^628309339 is an apocalyptic number.

628309339 is a deficient number, since it is larger than the sum of its proper divisors (94515109).

628309339 is a wasteful number, since it uses less digits than its factorization.

628309339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594585.

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 628309339 is about 25066.0993973933. The cubic root of 628309339 is about 856.4943550808.

The spelling of 628309339 in words is "six hundred twenty-eight million, three hundred nine thousand, three hundred thirty-nine".