999952439 has 4 divisors (see below), whose sum is σ = 1043428656. Its totient is φ = 956476224.

The previous prime is 999952411. The next prime is 999952477. The reversal of 999952439 is 934259999.

999952439 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 999952439 - 2¹⁶ = 999886903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999952489) 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, 21738074 + ... + 21738119.

It is an arithmetic number, because the mean of its divisors is an integer number (260857164).

Almost surely, 2^999952439 is an apocalyptic number.

999952439 is a deficient number, since it is larger than the sum of its proper divisors (43476217).

999952439 is a wasteful number, since it uses less digits than its factorization.

999952439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43476216.

The product of its digits is 7085880, while the sum is 59.

The square root of 999952439 is about 31622.0245873031. The cubic root of 999952439 is about 999.9841460820.

The spelling of 999952439 in words is "nine hundred ninety-nine million, nine hundred fifty-two thousand, four hundred thirty-nine".