1399628 has 6 divisors (see below), whose sum is σ = 2449356. Its totient is φ = 699812.

The previous prime is 1399621. The next prime is 1399633. The reversal of 1399628 is 8269931.

It is a junction number, because it is equal to n+sod(n) for n = 1399591 and 1399600.

It is not an unprimeable number, because it can be changed into a prime (1399621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174950 + ... + 174957.

It is an arithmetic number, because the mean of its divisors is an integer number (408226).

2^1399628 is an apocalyptic number.

It is an amenable number.

1399628 is a deficient number, since it is larger than the sum of its proper divisors (1049728).

1399628 is a wasteful number, since it uses less digits than its factorization.

1399628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349911 (or 349909 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The square root of 1399628 is about 1183.0587474847. The cubic root of 1399628 is about 111.8589849426.

The spelling of 1399628 in words is "one million, three hundred ninety-nine thousand, six hundred twenty-eight".