999959471 has 4 divisors (see below), whose sum is σ = 1142810832. Its totient is φ = 857108112.

The previous prime is 999959461. The next prime is 999959507. The reversal of 999959471 is 174959999.

It is a happy number.

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

It is not a de Polignac number, because 999959471 - 2⁶ = 999959407 is a prime.

It is a super-3 number, since 3×999959471³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999959461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71425670 + ... + 71425683.

It is an arithmetic number, because the mean of its divisors is an integer number (285702708).

Almost surely, 2^999959471 is an apocalyptic number.

999959471 is a deficient number, since it is larger than the sum of its proper divisors (142851361).

999959471 is a wasteful number, since it uses less digits than its factorization.

999959471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142851360.

The product of its digits is 8266860, while the sum is 62.

The square root of 999959471 is about 31622.1357754343. The cubic root of 999959471 is about 999.9864901508.

The spelling of 999959471 in words is "nine hundred ninety-nine million, nine hundred fifty-nine thousand, four hundred seventy-one".