999613406 has 16 divisors (see below), whose sum is σ = 1644774768. Its totient is φ = 451857600.

The previous prime is 999613399. The next prime is 999613411. The reversal of 999613406 is 604316999.

It is a super-2 number, since 2×999613406² = 1998453922909841672, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121535 + ... + 129498.

It is an arithmetic number, because the mean of its divisors is an integer number (102798423).

Almost surely, 2^999613406 is an apocalyptic number.

999613406 is a deficient number, since it is larger than the sum of its proper divisors (645161362).

999613406 is a wasteful number, since it uses less digits than its factorization.

999613406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251227.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 999613406 is about 31616.6634229483. The cubic root of 999613406 is about 999.8711187237.

The spelling of 999613406 in words is "nine hundred ninety-nine million, six hundred thirteen thousand, four hundred six".