97798911 has 16 divisors (see below), whose sum is σ = 149981184. Its totient is φ = 55527264.

The previous prime is 97798891. The next prime is 97798913. The reversal of 97798911 is 11989779.

It is not a de Polignac number, because 97798911 - 2⁶ = 97798847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97798913) 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 15 ways as a sum of consecutive naturals, for example, 11535 + ... + 18128.

It is an arithmetic number, because the mean of its divisors is an integer number (9373824).

Almost surely, 2^97798911 is an apocalyptic number.

97798911 is a deficient number, since it is larger than the sum of its proper divisors (52182273).

97798911 is a wasteful number, since it uses less digits than its factorization.

97798911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29830.

The product of its digits is 285768, while the sum is 51.

The square root of 97798911 is about 9889.3331928902. Note that the first 3 decimals coincide. The cubic root of 97798911 is about 460.7280704075.

The spelling of 97798911 in words is "ninety-seven million, seven hundred ninety-eight thousand, nine hundred eleven".