1397948 has 12 divisors (see below), whose sum is σ = 2465232. Its totient is φ = 693600.

The previous prime is 1397939. The next prime is 1397951. The reversal of 1397948 is 8497931.

It is a happy number.

It is a super-2 number, since 2×1397948² = 3908517221408, which contains 22 as substring.

It is a nialpdrome in base 11.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 728 + ... + 1823.

It is an arithmetic number, because the mean of its divisors is an integer number (205436).

2^1397948 is an apocalyptic number.

It is an amenable number.

1397948 is a deficient number, since it is larger than the sum of its proper divisors (1067284).

1397948 is a wasteful number, since it uses less digits than its factorization.

1397948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692 (or 2690 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 1397948 is about 1182.3485103809. The cubic root of 1397948 is about 111.8142115376.

The spelling of 1397948 in words is "one million, three hundred ninety-seven thousand, nine hundred forty-eight".