999104149 has 4 divisors (see below), whose sum is σ = 1001477740. Its totient is φ = 996730560.

The previous prime is 999104131. The next prime is 999104173. The reversal of 999104149 is 941401999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 941401999 = 79 ⋅11916481.

It can be written as a sum of positive squares in 2 ways, for example, as 344102500 + 655001649 = 18550^2 + 25593^2 .

It is a cyclic number.

It is not a de Polignac number, because 999104149 - 2⁷ = 999104021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 999104099 and 999104108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999104129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186164 + ... + 1187005.

It is an arithmetic number, because the mean of its divisors is an integer number (250369435).

Almost surely, 2^999104149 is an apocalyptic number.

It is an amenable number.

999104149 is a deficient number, since it is larger than the sum of its proper divisors (2373591).

999104149 is a wasteful number, since it uses less digits than its factorization.

999104149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2373590.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 999104149 is about 31608.6087798878. The cubic root of 999104149 is about 999.7012937835.

The spelling of 999104149 in words is "nine hundred ninety-nine million, one hundred four thousand, one hundred forty-nine".