999909354 has 32 divisors (see below), whose sum is σ = 2026100736. Its totient is φ = 328950720.

The previous prime is 999909343. The next prime is 999909359. The reversal of 999909354 is 453909999.

It is a junction number, because it is equal to n+sod(n) for n = 999909294 and 999909303.

It is not an unprimeable number, because it can be changed into a prime (999909359) 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 15 ways as a sum of consecutive naturals, for example, 146784 + ... + 153444.

It is an arithmetic number, because the mean of its divisors is an integer number (63315648).

Almost surely, 2^999909354 is an apocalyptic number.

999909354 is an abundant number, since it is smaller than the sum of its proper divisors (1026191382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999909354 is a wasteful number, since it uses less digits than its factorization.

999909354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6990.

The product of its (nonzero) digits is 3542940, while the sum is 57.

The square root of 999909354 is about 31621.3433300991. The cubic root of 999909354 is about 999.9697837537.

The spelling of 999909354 in words is "nine hundred ninety-nine million, nine hundred nine thousand, three hundred fifty-four".