999976422 has 16 divisors (see below), whose sum is σ = 2105213760. Its totient is φ = 315781992.

The previous prime is 999976381. The next prime is 999976423. The reversal of 999976422 is 224679999.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999976423) 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 7 ways as a sum of consecutive naturals, for example, 4385748 + ... + 4385975.

It is an arithmetic number, because the mean of its divisors is an integer number (131575860).

Almost surely, 2^999976422 is an apocalyptic number.

999976422 is an abundant number, since it is smaller than the sum of its proper divisors (1105237338).

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

999976422 is a wasteful number, since it uses less digits than its factorization.

999976422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8771747.

The product of its digits is 4408992, while the sum is 57.

The square root of 999976422 is about 31622.4037985729. The cubic root of 999976422 is about 999.9921406049.

The spelling of 999976422 in words is "nine hundred ninety-nine million, nine hundred seventy-six thousand, four hundred twenty-two".