1167999 has 8 divisors (see below), whose sum is σ = 1779840. Its totient is φ = 667416.

The previous prime is 1167973. The next prime is 1168001. The reversal of 1167999 is 9997611.

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

It is not a de Polignac number, because 1167999 - 2¹¹ = 1165951 is a prime.

It is a super-4 number, since 4×1167999⁴ (a number of 25 digits) contains 4444 as substring.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1167999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1167919) 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 7 ways as a sum of consecutive naturals, for example, 27789 + ... + 27830.

It is an arithmetic number, because the mean of its divisors is an integer number (222480).

2^1167999 is an apocalyptic number.

1167999 is a deficient number, since it is larger than the sum of its proper divisors (611841).

1167999 is an equidigital number, since it uses as much as digits as its factorization.

1167999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55629.

The product of its digits is 30618, while the sum is 42.

The square root of 1167999 is about 1080.7400242426. The cubic root of 1167999 is about 105.3127185084.

The spelling of 1167999 in words is "one million, one hundred sixty-seven thousand, nine hundred ninety-nine".