999886974 has 8 divisors (see below), whose sum is σ = 1999773960. Its totient is φ = 333295656.

The previous prime is 999886931. The next prime is 999886991. The reversal of 999886974 is 479688999.

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

999886974 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 999886899 and 999886908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83323909 + ... + 83323920.

It is an arithmetic number, because the mean of its divisors is an integer number (249971745).

Almost surely, 2^999886974 is an apocalyptic number.

999886974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999886974 is a wasteful number, since it uses less digits than its factorization.

999886974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166647834.

The product of its digits is 70543872, while the sum is 69.

The square root of 999886974 is about 31620.9894532097. The cubic root of 999886974 is about 999.9623232471.

The spelling of 999886974 in words is "nine hundred ninety-nine million, eight hundred eighty-six thousand, nine hundred seventy-four".