992405993 has 2 divisors, whose sum is σ = 992405994. Its totient is φ = 992405992.

The previous prime is 992405989. The next prime is 992406053. The reversal of 992405993 is 399504299.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 819562384 + 172843609 = 28628^2 + 13147^2 .

It is a cyclic number.

It is not a de Polignac number, because 992405993 - 2² = 992405989 is a prime.

It is not a weakly prime, because it can be changed into another prime (992405903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496202996 + 496202997.

It is an arithmetic number, because the mean of its divisors is an integer number (496202997).

Almost surely, 2^992405993 is an apocalyptic number.

It is an amenable number.

992405993 is a deficient number, since it is larger than the sum of its proper divisors (1).

992405993 is an equidigital number, since it uses as much as digits as its factorization.

992405993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 787320, while the sum is 50.

The square root of 992405993 is about 31502.4759820558. The cubic root of 992405993 is about 997.4622295022.

The spelling of 992405993 in words is "nine hundred ninety-two million, four hundred five thousand, nine hundred ninety-three".