1397798 has 4 divisors (see below), whose sum is σ = 2096700. Its totient is φ = 698898.

The previous prime is 1397783. The next prime is 1397833. The reversal of 1397798 is 8977931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8977931 = 347 ⋅25873.

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, 349448 + ... + 349451.

It is an arithmetic number, because the mean of its divisors is an integer number (524175).

2^1397798 is an apocalyptic number.

1397798 is a deficient number, since it is larger than the sum of its proper divisors (698902).

1397798 is an equidigital number, since it uses as much as digits as its factorization.

1397798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698901.

The product of its digits is 95256, while the sum is 44.

The square root of 1397798 is about 1182.2850756057. The cubic root of 1397798 is about 111.8102121681.

The spelling of 1397798 in words is "one million, three hundred ninety-seven thousand, seven hundred ninety-eight".