73899999 has 32 divisors (see below), whose sum is σ = 113023680. Its totient is φ = 47692800.

The previous prime is 73899979. The next prime is 73900009. The reversal of 73899999 is 99999837.

It is not a de Polignac number, because 73899999 - 2¹² = 73895903 is a prime.

It is a super-2 number, since 2×73899999² = 10922419704400002, which contains 22 as substring.

73899999 is a modest number, since divided by 9999 gives 7389 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73899979) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 266649 + ... + 266925.

It is an arithmetic number, because the mean of its divisors is an integer number (3531990).

Almost surely, 2^73899999 is an apocalyptic number.

73899999 is a deficient number, since it is larger than the sum of its proper divisors (39123681).

73899999 is a wasteful number, since it uses less digits than its factorization.

73899999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 562 counting only the distinct ones).

The product of its digits is 9920232, while the sum is 63.

The square root of 73899999 is about 8596.5108619719. The cubic root of 73899999 is about 419.6444439827.

The spelling of 73899999 in words is "seventy-three million, eight hundred ninety-nine thousand, nine hundred ninety-nine".