97890011 has 4 divisors (see below), whose sum is σ = 97909800. Its totient is φ = 97870224.

The previous prime is 97889999. The next prime is 97890017. The reversal of 97890011 is 11009879.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 97890011 - 2⁶ = 97889947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97890017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4895 + ... + 14823.

It is an arithmetic number, because the mean of its divisors is an integer number (24477450).

Almost surely, 2^97890011 is an apocalyptic number.

97890011 is a deficient number, since it is larger than the sum of its proper divisors (19789).

97890011 is an equidigital number, since it uses as much as digits as its factorization.

97890011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19788.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 97890011 is about 9893.9380936005. The cubic root of 97890011 is about 460.8710825708.

The spelling of 97890011 in words is "ninety-seven million, eight hundred ninety thousand, eleven".