97899878 has 8 divisors (see below), whose sum is σ = 147010680. Its totient is φ = 48896320.

The previous prime is 97899871. The next prime is 97899883. The reversal of 97899878 is 87899879.

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

It is a super-3 number, since 3×97899878³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97899871) 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, 24488 + ... + 28203.

It is an arithmetic number, because the mean of its divisors is an integer number (18376335).

Almost surely, 2^97899878 is an apocalyptic number.

97899878 is a deficient number, since it is larger than the sum of its proper divisors (49110802).

97899878 is a wasteful number, since it uses less digits than its factorization.

97899878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53622.

The product of its digits is 18289152, while the sum is 65.

The square root of 97899878 is about 9894.4367196925. The cubic root of 97899878 is about 460.8865668276.

Subtracting from 97899878 its reverse (87899879), we obtain a palindrome (9999999).

The spelling of 97899878 in words is "ninety-seven million, eight hundred ninety-nine thousand, eight hundred seventy-eight".