1047091 has 4 divisors (see below), whose sum is σ = 1054872. Its totient is φ = 1039312.

The previous prime is 1047089. The next prime is 1047097. The reversal of 1047091 is 1907401.

1047091 = T₈₃₄ + T₈₃₅ + T₈₃₆.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1907401 = 47 ⋅40583.

It is a cyclic number.

It is not a de Polignac number, because 1047091 - 2¹ = 1047089 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1047097) 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, 3685 + ... + 3958.

It is an arithmetic number, because the mean of its divisors is an integer number (263718).

2^1047091 is an apocalyptic number.

1047091 is the 836-th centered triangular number.

1047091 is a deficient number, since it is larger than the sum of its proper divisors (7781).

1047091 is an equidigital number, since it uses as much as digits as its factorization.

1047091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7780.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1047091 is about 1023.2746454398. The cubic root of 1047091 is about 101.5456854688.

The spelling of 1047091 in words is "one million, forty-seven thousand, ninety-one".