999694149 has 12 divisors (see below), whose sum is σ = 1393400736. Its totient is φ = 637485112.

The previous prime is 999694127. The next prime is 999694187. The reversal of 999694149 is 941496999.

It is not a de Polignac number, because 999694149 - 2⁵ = 999694117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 999694092 and 999694101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999694649) 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 11 ways as a sum of consecutive naturals, for example, 313377 + ... + 316550.

It is an arithmetic number, because the mean of its divisors is an integer number (116116728).

Almost surely, 2^999694149 is an apocalyptic number.

It is an amenable number.

999694149 is a deficient number, since it is larger than the sum of its proper divisors (393706587).

999694149 is a wasteful number, since it uses less digits than its factorization.

999694149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629976 (or 629953 counting only the distinct ones).

The product of its digits is 5668704, while the sum is 60.

The square root of 999694149 is about 31617.9403029356. The cubic root of 999694149 is about 999.8980392710.

The spelling of 999694149 in words is "nine hundred ninety-nine million, six hundred ninety-four thousand, one hundred forty-nine".