97855879 has 4 divisors (see below), whose sum is σ = 106751880. Its totient is φ = 88959880.

The previous prime is 97855873. The next prime is 97855897.

97855879 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97855879 - 2¹¹ = 97853831 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97855873) 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, 4447984 + ... + 4448005.

It is an arithmetic number, because the mean of its divisors is an integer number (26687970).

Almost surely, 2^97855879 is an apocalyptic number.

97855879 is a deficient number, since it is larger than the sum of its proper divisors (8896001).

97855879 is a wasteful number, since it uses less digits than its factorization.

97855879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8896000.

The product of its digits is 6350400, while the sum is 58.

The square root of 97855879 is about 9892.2130486560. The cubic root of 97855879 is about 460.8175112879.

The spelling of 97855879 in words is "ninety-seven million, eight hundred fifty-five thousand, eight hundred seventy-nine".