97189999 has 8 divisors (see below), whose sum is σ = 98930480. Its totient is φ = 95458176.

The previous prime is 97189957. The next prime is 97190021. The reversal of 97189999 is 99998179.

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

It is a cyclic number.

It is not a de Polignac number, because 97189999 - 2⁷ = 97189871 is a prime.

It is a Duffinian number.

97189999 is a modest number, since divided by 9999 gives 9718 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97189909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23047 + ... + 26935.

It is an arithmetic number, because the mean of its divisors is an integer number (12366310).

Almost surely, 2^97189999 is an apocalyptic number.

97189999 is a deficient number, since it is larger than the sum of its proper divisors (1740481).

97189999 is a wasteful number, since it uses less digits than its factorization.

97189999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4329.

The product of its digits is 3306744, while the sum is 61.

The square root of 97189999 is about 9858.4988208145. The cubic root of 97189999 is about 459.7698896347.

It can be divided in two parts, 97 and 189999, that added together give a square (190096 = 436²).

The spelling of 97189999 in words is "ninety-seven million, one hundred eighty-nine thousand, nine hundred ninety-nine".