1097869 has 2 divisors, whose sum is σ = 1097870. Its totient is φ = 1097868.

The previous prime is 1097861. The next prime is 1097879. The reversal of 1097869 is 9687901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1075369 + 22500 = 1037^2 + 150^2 .

It is a cyclic number.

It is not a de Polignac number, because 1097869 - 2³ = 1097861 is a prime.

It is a super-2 number, since 2×1097869² = 2410632682322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1097861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548934 + 548935.

It is an arithmetic number, because the mean of its divisors is an integer number (548935).

2^1097869 is an apocalyptic number.

It is an amenable number.

1097869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097869 is an equidigital number, since it uses as much as digits as its factorization.

1097869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 1097869 is about 1047.7924412783. The cubic root of 1097869 is about 103.1613081824.

It can be divided in two parts, 10 and 97869, that added together give a palindrome (97879).

The spelling of 1097869 in words is "one million, ninety-seven thousand, eight hundred sixty-nine".