999431022 has 16 divisors (see below), whose sum is σ = 1999550592. Its totient is φ = 333028920.

The previous prime is 999431021. The next prime is 999431023. The reversal of 999431022 is 220134999.

It is an interprime number because it is at equal distance from previous prime (999431021) and next prime (999431023).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999431021) 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 7 ways as a sum of consecutive naturals, for example, 8754 + ... + 45557.

It is an arithmetic number, because the mean of its divisors is an integer number (124971912).

Almost surely, 2^999431022 is an apocalyptic number.

999431022 is an abundant number, since it is smaller than the sum of its proper divisors (1000119570).

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

999431022 is a wasteful number, since it uses less digits than its factorization.

999431022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57383.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 999431022 is about 31613.7789895482. The cubic root of 999431022 is about 999.8103046846.

The spelling of 999431022 in words is "nine hundred ninety-nine million, four hundred thirty-one thousand, twenty-two".