1397078 has 4 divisors (see below), whose sum is σ = 2095620. Its totient is φ = 698538.

The previous prime is 1397069. The next prime is 1397087. The reversal of 1397078 is 8707931.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1397069) and next prime (1397087).

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, 349268 + ... + 349271.

It is an arithmetic number, because the mean of its divisors is an integer number (523905).

2^1397078 is an apocalyptic number.

1397078 is a deficient number, since it is larger than the sum of its proper divisors (698542).

1397078 is an equidigital number, since it uses as much as digits as its factorization.

1397078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698541.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 1397078 is about 1181.9805412950. The cubic root of 1397078 is about 111.7910112108.

The spelling of 1397078 in words is "one million, three hundred ninety-seven thousand, seventy-eight".