1397149 has 4 divisors (see below), whose sum is σ = 1504636. Its totient is φ = 1289664.

The previous prime is 1397131. The next prime is 1397153. The reversal of 1397149 is 9417931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 202500 + 1194649 = 450^2 + 1093^2 .

It is a cyclic number.

It is not a de Polignac number, because 1397149 - 2⁵ = 1397117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397119) 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 3 ways as a sum of consecutive naturals, for example, 53724 + ... + 53749.

It is an arithmetic number, because the mean of its divisors is an integer number (376159).

2^1397149 is an apocalyptic number.

It is an amenable number.

1397149 is a deficient number, since it is larger than the sum of its proper divisors (107487).

1397149 is a wasteful number, since it uses less digits than its factorization.

1397149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107486.

The product of its digits is 6804, while the sum is 34.

The square root of 1397149 is about 1182.0105752488. The cubic root of 1397149 is about 111.7929049317.

The spelling of 1397149 in words is "one million, three hundred ninety-seven thousand, one hundred forty-nine".