1397158 has 16 divisors (see below), whose sum is σ = 2499840. Its totient is φ = 572616.

The previous prime is 1397153. The next prime is 1397159. The reversal of 1397158 is 8517931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397153) 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, 1848 + ... + 2491.

It is an arithmetic number, because the mean of its divisors is an integer number (156240).

2^1397158 is an apocalyptic number.

1397158 is a deficient number, since it is larger than the sum of its proper divisors (1102682).

1397158 is a wasteful number, since it uses less digits than its factorization.

1397158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4371.

The product of its digits is 7560, while the sum is 34.

The square root of 1397158 is about 1182.0143823152. The cubic root of 1397158 is about 111.7931449763.

Subtracting from 1397158 its sum of digits (34), we obtain a square (1397124 = 1182²).

The spelling of 1397158 in words is "one million, three hundred ninety-seven thousand, one hundred fifty-eight".