999104779 has 2 divisors, whose sum is σ = 999104780. Its totient is φ = 999104778.

The previous prime is 999104741. The next prime is 999104801. The reversal of 999104779 is 977401999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999104779 - 2²⁵ = 965550347 is a prime.

It is not a weakly prime, because it can be changed into another prime (999104179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499552389 + 499552390.

It is an arithmetic number, because the mean of its divisors is an integer number (499552390).

Almost surely, 2^999104779 is an apocalyptic number.

999104779 is a deficient number, since it is larger than the sum of its proper divisors (1).

999104779 is an equidigital number, since it uses as much as digits as its factorization.

999104779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1285956, while the sum is 55.

The square root of 999104779 is about 31608.6187455257. The cubic root of 999104779 is about 999.7015039089.

The spelling of 999104779 in words is "nine hundred ninety-nine million, one hundred four thousand, seven hundred seventy-nine".