628962839 has 4 divisors (see below), whose sum is σ = 629059680. Its totient is φ = 628866000.

The previous prime is 628962811. The next prime is 628962847. The reversal of 628962839 is 938269826.

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 628962839 - 2²⁸ = 360527383 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 (628962239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37919 + ... + 51920.

It is an arithmetic number, because the mean of its divisors is an integer number (157264920).

Almost surely, 2^628962839 is an apocalyptic number.

628962839 is a deficient number, since it is larger than the sum of its proper divisors (96841).

628962839 is an equidigital number, since it uses as much as digits as its factorization.

628962839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96840.

The product of its digits is 2239488, while the sum is 53.

The square root of 628962839 is about 25079.1315439750. The cubic root of 628962839 is about 856.7911967187.

The spelling of 628962839 in words is "six hundred twenty-eight million, nine hundred sixty-two thousand, eight hundred thirty-nine".