1172973 has 4 divisors (see below), whose sum is σ = 1563968. Its totient is φ = 781980.

The previous prime is 1172959. The next prime is 1172981. The reversal of 1172973 is 3792711.

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 1172973 - 2⁴ = 1172957 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1172973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195493 + ... + 195498.

It is an arithmetic number, because the mean of its divisors is an integer number (390992).

2^1172973 is an apocalyptic number.

It is an amenable number.

1172973 is a deficient number, since it is larger than the sum of its proper divisors (390995).

1172973 is an equidigital number, since it uses as much as digits as its factorization.

1172973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390994.

The product of its digits is 2646, while the sum is 30.

The square root of 1172973 is about 1083.0387804691. The cubic root of 1172973 is about 105.4620004954.

It can be divided in two parts, 1172 and 973, that added together give a triangular number (2145 = T₆₅).

The spelling of 1172973 in words is "one million, one hundred seventy-two thousand, nine hundred seventy-three".