999359947 has 4 divisors (see below), whose sum is σ = 1022600920. Its totient is φ = 976118976.

The previous prime is 999359939. The next prime is 999359957. The reversal of 999359947 is 749953999.

999359947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 999359947 - 2³ = 999359939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999359957) 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, 11620422 + ... + 11620507.

It is an arithmetic number, because the mean of its divisors is an integer number (255650230).

Almost surely, 2^999359947 is an apocalyptic number.

999359947 is a deficient number, since it is larger than the sum of its proper divisors (23240973).

999359947 is a wasteful number, since it uses less digits than its factorization.

999359947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23240972.

The product of its digits is 24800580, while the sum is 64.

The square root of 999359947 is about 31612.6548552949. The cubic root of 999359947 is about 999.7866034652.

The spelling of 999359947 in words is "nine hundred ninety-nine million, three hundred fifty-nine thousand, nine hundred forty-seven".