1997914 has 4 divisors (see below), whose sum is σ = 2996874. Its totient is φ = 998956.

The previous prime is 1997911. The next prime is 1997921. The reversal of 1997914 is 4197991.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4197991 = 7 ⋅599713.

It can be written as a sum of positive squares in only one way, i.e., 1863225 + 134689 = 1365^2 + 367^2 .

It is not an unprimeable number, because it can be changed into a prime (1997911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499477 + ... + 499480.

2^1997914 is an apocalyptic number.

1997914 is a deficient number, since it is larger than the sum of its proper divisors (998960).

1997914 is an equidigital number, since it uses as much as digits as its factorization.

1997914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998959.

The product of its digits is 20412, while the sum is 40.

The square root of 1997914 is about 1413.4758575936. The cubic root of 1997914 is about 125.9482864966.

The spelling of 1997914 in words is "one million, nine hundred ninety-seven thousand, nine hundred fourteen".