1397973 has 8 divisors (see below), whose sum is σ = 1907488. Its totient is φ = 910224.

The previous prime is 1397959. The next prime is 1397983. The reversal of 1397973 is 3797931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1397973 - 2⁶ = 1397909 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397933) 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 in 7 ways as a sum of consecutive naturals, for example, 5290 + ... + 5547.

It is an arithmetic number, because the mean of its divisors is an integer number (238436).

2^1397973 is an apocalyptic number.

It is an amenable number.

1397973 is a deficient number, since it is larger than the sum of its proper divisors (509515).

1397973 is a wasteful number, since it uses less digits than its factorization.

1397973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10883.

The product of its digits is 35721, while the sum is 39.

The square root of 1397973 is about 1182.3590825126. The cubic root of 1397973 is about 111.8148780713.

The spelling of 1397973 in words is "one million, three hundred ninety-seven thousand, nine hundred seventy-three".