1097949 has 4 divisors (see below), whose sum is σ = 1463936. Its totient is φ = 731964.

The previous prime is 1097947. The next prime is 1097983. The reversal of 1097949 is 9497901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1097949 - 2¹ = 1097947 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097947) 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, 182989 + ... + 182994.

It is an arithmetic number, because the mean of its divisors is an integer number (365984).

2^1097949 is an apocalyptic number.

It is an amenable number.

1097949 is a deficient number, since it is larger than the sum of its proper divisors (365987).

1097949 is an equidigital number, since it uses as much as digits as its factorization.

1097949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365986.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 1097949 is about 1047.8306160826. The cubic root of 1097949 is about 103.1638138560.

The spelling of 1097949 in words is "one million, ninety-seven thousand, nine hundred forty-nine".