997950992 has 40 divisors (see below), whose sum is σ = 1975152600. Its totient is φ = 488284160.

The previous prime is 997950991. The next prime is 997951001. The reversal of 997950992 is 299059799.

997950992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 453008656 + 544942336 = 21284^2 + 23344^2 .

It is not an unprimeable number, because it can be changed into a prime (997950991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379442 + ... + 382062.

It is an arithmetic number, because the mean of its divisors is an integer number (49378815).

Almost surely, 2^997950992 is an apocalyptic number.

It is an amenable number.

997950992 is a deficient number, since it is larger than the sum of its proper divisors (977201608).

997950992 is a wasteful number, since it uses less digits than its factorization.

997950992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3131 (or 3125 counting only the distinct ones).

The product of its (nonzero) digits is 4133430, while the sum is 59.

The square root of 997950992 is about 31590.3623277733. The cubic root of 997950992 is about 999.3165303089.

The spelling of 997950992 in words is "nine hundred ninety-seven million, nine hundred fifty thousand, nine hundred ninety-two".