1009397 has 4 divisors (see below), whose sum is σ = 1036716. Its totient is φ = 982080.

The previous prime is 1009387. The next prime is 1009399. The reversal of 1009397 is 7939001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7939001 = 7 ⋅1134143.

It can be written as a sum of positive squares in 2 ways, for example, as 844561 + 164836 = 919^2 + 406^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009397 - 2¹⁰ = 1008373 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 (1009399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13604 + ... + 13677.

It is an arithmetic number, because the mean of its divisors is an integer number (259179).

2^1009397 is an apocalyptic number.

It is an amenable number.

1009397 is a deficient number, since it is larger than the sum of its proper divisors (27319).

1009397 is an equidigital number, since it uses as much as digits as its factorization.

1009397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27318.

The product of its (nonzero) digits is 1701, while the sum is 29.

The square root of 1009397 is about 1004.6875136081. The cubic root of 1009397 is about 100.3122572724.

The spelling of 1009397 in words is "one million, nine thousand, three hundred ninety-seven".