999290375424 has 162 divisors, whose sum is σ = 3166940281778. Its totient is φ = 302815180800.

The previous prime is 999290375417. The next prime is 999290375429. The reversal of 999290375424 is 424573092999.

999290375424 is a `hidden beast` number, since 9 + 9 + 92 + 90 + 37 + 5 + 424 = 666.

It can be written as a sum of positive squares in only one way, i.e., 897248461824 + 102041913600 = 947232^2 + 319440^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999290375429) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1513447 + ... + 2071014.

Almost surely, 2^999290375424 is an apocalyptic number.

It is an amenable number.

999290375424 is an abundant number, since it is smaller than the sum of its proper divisors (2167649906354).

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

999290375424 is a wasteful number, since it uses less digits than its factorization.

999290375424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3584505 (or 3584477 counting only the distinct ones).

The product of its (nonzero) digits is 44089920, while the sum is 63.

The spelling of 999290375424 in words is "nine hundred ninety-nine billion, two hundred ninety million, three hundred seventy-five thousand, four hundred twenty-four".