1097399 has 4 divisors (see below), whose sum is σ = 1145136. Its totient is φ = 1049664.

The previous prime is 1097381. The next prime is 1097413. The reversal of 1097399 is 9937901.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1097399 - 2⁸ = 1097143 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 (1097359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23834 + ... + 23879.

It is an arithmetic number, because the mean of its divisors is an integer number (286284).

2^1097399 is an apocalyptic number.

1097399 is a deficient number, since it is larger than the sum of its proper divisors (47737).

1097399 is an equidigital number, since it uses as much as digits as its factorization.

1097399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47736.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 1097399 is about 1047.5681362088. The cubic root of 1097399 is about 103.1465848910.

The spelling of 1097399 in words is "one million, ninety-seven thousand, three hundred ninety-nine".