999412907 has 4 divisors (see below), whose sum is σ = 999760080. Its totient is φ = 999065736.

The previous prime is 999412879. The next prime is 999412933. The reversal of 999412907 is 709214999.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999412907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999412987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169232 + ... + 175037.

It is an arithmetic number, because the mean of its divisors is an integer number (249940020).

Almost surely, 2^999412907 is an apocalyptic number.

999412907 is a deficient number, since it is larger than the sum of its proper divisors (347173).

999412907 is a wasteful number, since it uses less digits than its factorization.

999412907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347172.

The product of its (nonzero) digits is 367416, while the sum is 50.

The square root of 999412907 is about 31613.4924834318. The cubic root of 999412907 is about 999.8042640233.

The spelling of 999412907 in words is "nine hundred ninety-nine million, four hundred twelve thousand, nine hundred seven".