992831440 has 20 divisors (see below), whose sum is σ = 2308333284. Its totient is φ = 397132544.

The previous prime is 992831423. The next prime is 992831449. The reversal of 992831440 is 44138299.

It can be written as a sum of positive squares in 2 ways, for example, as 716739984 + 276091456 = 26772^2 + 16616^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 992831393 and 992831402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992831449) 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 3 ways as a sum of consecutive naturals, for example, 6205117 + ... + 6205276.

Almost surely, 2^992831440 is an apocalyptic number.

It is an amenable number.

992831440 is an abundant number, since it is smaller than the sum of its proper divisors (1315501844).

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

992831440 is a wasteful number, since it uses less digits than its factorization.

992831440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12410406 (or 12410400 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 992831440 is about 31509.2278547095. The cubic root of 992831440 is about 997.6047473454.

The spelling of 992831440 in words is "nine hundred ninety-two million, eight hundred thirty-one thousand, four hundred forty".