1399426 has 16 divisors (see below), whose sum is σ = 2525760. Its totient is φ = 568080.

The previous prime is 1399417. The next prime is 1399427. The reversal of 1399426 is 6249931.

It is a junction number, because it is equal to n+sod(n) for n = 1399391 and 1399400.

It is not an unprimeable number, because it can be changed into a prime (1399427) 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, 2365 + ... + 2896.

It is an arithmetic number, because the mean of its divisors is an integer number (157860).

2^1399426 is an apocalyptic number.

1399426 is a deficient number, since it is larger than the sum of its proper divisors (1126334).

1399426 is a wasteful number, since it uses less digits than its factorization.

1399426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5289.

The product of its digits is 11664, while the sum is 34.

The square root of 1399426 is about 1182.9733724814. The cubic root of 1399426 is about 111.8536033693.

The spelling of 1399426 in words is "one million, three hundred ninety-nine thousand, four hundred twenty-six".