1090913 has 4 divisors (see below), whose sum is σ = 1138368. Its totient is φ = 1043460.

The previous prime is 1090909. The next prime is 1090919. The reversal of 1090913 is 3190901.

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 a cyclic number.

It is not a de Polignac number, because 1090913 - 2² = 1090909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 47431 = 1090913 / (1 + 0 + 9 + 0 + 9 + 1 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1090919) 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, 23693 + ... + 23738.

It is an arithmetic number, because the mean of its divisors is an integer number (284592).

2^1090913 is an apocalyptic number.

It is an amenable number.

1090913 is a deficient number, since it is larger than the sum of its proper divisors (47455).

1090913 is an equidigital number, since it uses as much as digits as its factorization.

1090913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47454.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 1090913 is about 1044.4678070673. The cubic root of 1090913 is about 102.9429727994.

The spelling of 1090913 in words is "one million, ninety thousand, nine hundred thirteen".