999974 has 8 divisors (see below), whose sum is σ = 1588248. Its totient is φ = 470560.

The previous prime is 999961. The next prime is 999979. The reversal of 999974 is 479999.

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

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999979) 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, 14672 + ... + 14739.

It is an arithmetic number, because the mean of its divisors is an integer number (198531).

2⁹⁹⁹⁹⁷⁴ is an apocalyptic number.

999974 is a deficient number, since it is larger than the sum of its proper divisors (588274).

999974 is a wasteful number, since it uses less digits than its factorization.

999974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29430.

The product of its digits is 183708, while the sum is 47.

The square root of 999974 is about 999.9869999155. The cubic root of 999974 is about 99.9991333258. Note that the first 3 decimals are identical.

It can be divided in two parts, 99997 and 4, that added together give a palindrome (100001).

The spelling of 999974 in words is "nine hundred ninety-nine thousand, nine hundred seventy-four".