78112299 has 4 divisors (see below), whose sum is σ = 104149736. Its totient is φ = 52074864.

The previous prime is 78112271. The next prime is 78112303. The reversal of 78112299 is 99221187.

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

It is not a de Polignac number, because 78112299 - 2⁷ = 78112171 is a prime.

It is a super-2 number, since 2×78112299² = 12203062510130802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78112259) 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, 13018714 + ... + 13018719.

It is an arithmetic number, because the mean of its divisors is an integer number (26037434).

Almost surely, 2^78112299 is an apocalyptic number.

78112299 is a deficient number, since it is larger than the sum of its proper divisors (26037437).

78112299 is a wasteful number, since it uses less digits than its factorization.

78112299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26037436.

The product of its digits is 18144, while the sum is 39.

The square root of 78112299 is about 8838.1162585700. The cubic root of 78112299 is about 427.4708191155.

The spelling of 78112299 in words is "seventy-eight million, one hundred twelve thousand, two hundred ninety-nine".