999112061 has 2 divisors, whose sum is σ = 999112062. Its totient is φ = 999112060.

The previous prime is 999112043. The next prime is 999112109. The reversal of 999112061 is 160211999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 998180836 + 931225 = 31594^2 + 965^2 .

It is a cyclic number.

It is not a de Polignac number, because 999112061 - 2²² = 994917757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999112001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499556030 + 499556031.

It is an arithmetic number, because the mean of its divisors is an integer number (499556031).

Almost surely, 2^999112061 is an apocalyptic number.

It is an amenable number.

999112061 is a deficient number, since it is larger than the sum of its proper divisors (1).

999112061 is an equidigital number, since it uses as much as digits as its factorization.

999112061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 38.

The square root of 999112061 is about 31608.7339354173. The cubic root of 999112061 is about 999.7039326861.

The spelling of 999112061 in words is "nine hundred ninety-nine million, one hundred twelve thousand, sixty-one".