999412 has 6 divisors (see below), whose sum is σ = 1748978. Its totient is φ = 499704.

The previous prime is 999389. The next prime is 999431. The reversal of 999412 is 214999.

It can be written as a sum of positive squares in only one way, i.e., 992016 + 7396 = 996^2 + 86^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124923 + ... + 124930.

2⁹⁹⁹⁴¹² is an apocalyptic number.

It is an amenable number.

999412 is a deficient number, since it is larger than the sum of its proper divisors (749566).

999412 is a wasteful number, since it uses less digits than its factorization.

999412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249857 (or 249855 counting only the distinct ones).

The product of its digits is 5832, while the sum is 34.

The square root of 999412 is about 999.7059567693. The cubic root of 999412 is about 99.9803961571.

The spelling of 999412 in words is "nine hundred ninety-nine thousand, four hundred twelve".