97889081 has 8 divisors (see below), whose sum is σ = 102346944. Its totient is φ = 93448080.

The previous prime is 97889059. The next prime is 97889101. The reversal of 97889081 is 18098879.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-97889081 is a prime.

It is a super-2 number, since 2×97889081² = 19164544358049122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97889681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8510 + ... + 16376.

It is an arithmetic number, because the mean of its divisors is an integer number (12793368).

Almost surely, 2^97889081 is an apocalyptic number.

It is an amenable number.

97889081 is a deficient number, since it is larger than the sum of its proper divisors (4457863).

97889081 is a wasteful number, since it uses less digits than its factorization.

97889081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8431.

The product of its (nonzero) digits is 290304, while the sum is 50.

The square root of 97889081 is about 9893.8910950141. The cubic root of 97889081 is about 460.8696230706.

The spelling of 97889081 in words is "ninety-seven million, eight hundred eighty-nine thousand, eighty-one".