1398356 has 6 divisors (see below), whose sum is σ = 2447130. Its totient is φ = 699176.

The previous prime is 1398349. The next prime is 1398367. The reversal of 1398356 is 6538931.

It can be written as a sum of positive squares in only one way, i.e., 1210000 + 188356 = 1100^2 + 434^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174791 + ... + 174798.

It is an arithmetic number, because the mean of its divisors is an integer number (407855).

2^1398356 is an apocalyptic number.

It is an amenable number.

1398356 is a deficient number, since it is larger than the sum of its proper divisors (1048774).

1398356 is a wasteful number, since it uses less digits than its factorization.

1398356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349593 (or 349591 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 1398356 is about 1182.5210357537. The cubic root of 1398356 is about 111.8250883754.

The spelling of 1398356 in words is "one million, three hundred ninety-eight thousand, three hundred fifty-six".