1397937 has 8 divisors (see below), whose sum is σ = 1894720. Its totient is φ = 916560.

The previous prime is 1397933. The next prime is 1397939. The reversal of 1397937 is 7397931.

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

It is not a de Polignac number, because 1397937 - 2² = 1397933 is a prime.

It is a Duffinian number.

1397937 is a lucky number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 1397895 and 1397904.

It is not an unprimeable number, because it can be changed into a prime (1397933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3637 + ... + 4002.

It is an arithmetic number, because the mean of its divisors is an integer number (236840).

2^1397937 is an apocalyptic number.

It is an amenable number.

1397937 is a deficient number, since it is larger than the sum of its proper divisors (496783).

1397937 is an equidigital number, since it uses as much as digits as its factorization.

1397937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7703.

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

The square root of 1397937 is about 1182.3438586131. The cubic root of 1397937 is about 111.8139182602.

The spelling of 1397937 in words is "one million, three hundred ninety-seven thousand, nine hundred thirty-seven".