1097947 has 2 divisors, whose sum is σ = 1097948. Its totient is φ = 1097946.

The previous prime is 1097933. The next prime is 1097983. The reversal of 1097947 is 7497901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1097947 - 2⁷ = 1097819 is a prime.

It is a super-2 number, since 2×1097947² = 2410975229618, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1097147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548973 + 548974.

It is an arithmetic number, because the mean of its divisors is an integer number (548974).

2^1097947 is an apocalyptic number.

1097947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097947 is an equidigital number, since it uses as much as digits as its factorization.

1097947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 1097947 is about 1047.8296617294. The cubic root of 1097947 is about 103.1637512157.

It can be divided in two parts, 10979 and 47, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 1097947 in words is "one million, ninety-seven thousand, nine hundred forty-seven".