1398074 has 4 divisors (see below), whose sum is σ = 2097114. Its totient is φ = 699036.

The previous prime is 1398053. The next prime is 1398079. The reversal of 1398074 is 4708931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4708931 = 31 ⋅151901.

It can be written as a sum of positive squares in only one way, i.e., 797449 + 600625 = 893^2 + 775^2 .

It is a super-2 number, since 2×1398074² = 3909221818952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1398074.

It is not an unprimeable number, because it can be changed into a prime (1398079) 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, 349517 + ... + 349520.

2^1398074 is an apocalyptic number.

1398074 is a deficient number, since it is larger than the sum of its proper divisors (699040).

1398074 is an equidigital number, since it uses as much as digits as its factorization.

1398074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699039.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1398074 is about 1182.4017929621. The cubic root of 1398074 is about 111.8175707869.

The spelling of 1398074 in words is "one million, three hundred ninety-eight thousand, seventy-four".