1397547 has 16 divisors (see below), whose sum is σ = 2088960. Its totient is φ = 923400.

The previous prime is 1397531. The next prime is 1397551. The reversal of 1397547 is 7457931.

It is a happy number.

It is not a de Polignac number, because 1397547 - 2⁴ = 1397531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1397447) 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 15 ways as a sum of consecutive naturals, for example, 5022 + ... + 5292.

It is an arithmetic number, because the mean of its divisors is an integer number (130560).

2^1397547 is an apocalyptic number.

1397547 is a deficient number, since it is larger than the sum of its proper divisors (691413).

1397547 is a wasteful number, since it uses less digits than its factorization.

1397547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 465 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 1397547 is about 1182.1789204685. The cubic root of 1397547 is about 111.8035192499.

The spelling of 1397547 in words is "one million, three hundred ninety-seven thousand, five hundred forty-seven".