99997982 has 8 divisors (see below), whose sum is σ = 171425136. Its totient is φ = 42856272.

The previous prime is 99997981. The next prime is 99998021. The reversal of 99997982 is 28979999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99997981) 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, 3571343 + ... + 3571370.

It is an arithmetic number, because the mean of its divisors is an integer number (21428142).

Almost surely, 2^99997982 is an apocalyptic number.

99997982 is a deficient number, since it is larger than the sum of its proper divisors (71427154).

99997982 is a wasteful number, since it uses less digits than its factorization.

99997982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7142722.

The product of its digits is 6613488, while the sum is 62.

The square root of 99997982 is about 9999.8990994910. The cubic root of 99997982 is about 464.1557610982.

The spelling of 99997982 in words is "ninety-nine million, nine hundred ninety-seven thousand, nine hundred eighty-two".