99983997 has 8 divisors (see below), whose sum is σ = 148124480. Its totient is φ = 66655980.

The previous prime is 99983971. The next prime is 99984029. The reversal of 99983997 is 79938999.

It is not a de Polignac number, because 99983997 - 2¹⁴ = 99967613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99983957) 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 7 ways as a sum of consecutive naturals, for example, 1851529 + ... + 1851582.

It is an arithmetic number, because the mean of its divisors is an integer number (18515560).

Almost surely, 2^99983997 is an apocalyptic number.

It is an amenable number.

99983997 is a deficient number, since it is larger than the sum of its proper divisors (48140483).

99983997 is a wasteful number, since it uses less digits than its factorization.

99983997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703120 (or 3703114 counting only the distinct ones).

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

The square root of 99983997 is about 9999.1998179854. The cubic root of 99983997 is about 464.1341222584.

The spelling of 99983997 in words is "ninety-nine million, nine hundred eighty-three thousand, nine hundred ninety-seven".