1090047 has 8 divisors (see below), whose sum is σ = 1661056. Its totient is φ = 622872.

The previous prime is 1090031. The next prime is 1090097. The reversal of 1090047 is 7400901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1090047 - 2⁴ = 1090031 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 51907 = 1090047 / (1 + 0 + 9 + 0 + 0 + 4 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25933 + ... + 25974.

It is an arithmetic number, because the mean of its divisors is an integer number (207632).

2^1090047 is an apocalyptic number.

1090047 is a deficient number, since it is larger than the sum of its proper divisors (571009).

1090047 is an equidigital number, since it uses as much as digits as its factorization.

1090047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51917.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1090047 is about 1044.0531595661. The cubic root of 1090047 is about 102.9157258315.

Subtracting from 1090047 its sum of digits (21), we obtain a triangular number (1090026 = T₁₄₇₆).

Adding to 1090047 its reverse (7400901), we get a palindrome (8490948).

The spelling of 1090047 in words is "one million, ninety thousand, forty-seven".