99978104 has 8 divisors (see below), whose sum is σ = 187458960. Its totient is φ = 49989048.

The previous prime is 99978101. The next prime is 99978121. The reversal of 99978104 is 40187999.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99978101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6248624 + ... + 6248639.

It is an arithmetic number, because the mean of its divisors is an integer number (23432370).

Almost surely, 2^99978104 is an apocalyptic number.

It is an amenable number.

99978104 is a deficient number, since it is larger than the sum of its proper divisors (87480856).

99978104 is a wasteful number, since it uses less digits than its factorization.

99978104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12497269 (or 12497265 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 99978104 is about 9998.9051400641. The cubic root of 99978104 is about 464.1250034787.

The spelling of 99978104 in words is "ninety-nine million, nine hundred seventy-eight thousand, one hundred four".