999112979 has 2 divisors, whose sum is σ = 999112980. Its totient is φ = 999112978.

The previous prime is 999112973. The next prime is 999113029. The reversal of 999112979 is 979211999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999112979 - 2¹⁶ = 999047443 is a prime.

It is not a weakly prime, because it can be changed into another prime (999112973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499556489 + 499556490.

It is an arithmetic number, because the mean of its divisors is an integer number (499556490).

Almost surely, 2^999112979 is an apocalyptic number.

999112979 is a deficient number, since it is larger than the sum of its proper divisors (1).

999112979 is an equidigital number, since it uses as much as digits as its factorization.

999112979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 826686, while the sum is 56.

The square root of 999112979 is about 31608.7484567169. The cubic root of 999112979 is about 999.7042388673.

The spelling of 999112979 in words is "nine hundred ninety-nine million, one hundred twelve thousand, nine hundred seventy-nine".