99378883 has 4 divisors (see below), whose sum is σ = 103699728. Its totient is φ = 95058040.

The previous prime is 99378871. The next prime is 99378887. The reversal of 99378883 is 38887399.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38887399 = 163 ⋅238573.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99378883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99378887) 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, 2160388 + ... + 2160433.

It is an arithmetic number, because the mean of its divisors is an integer number (25924932).

Almost surely, 2^99378883 is an apocalyptic number.

99378883 is a deficient number, since it is larger than the sum of its proper divisors (4320845).

99378883 is a wasteful number, since it uses less digits than its factorization.

99378883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4320844.

The product of its digits is 2612736, while the sum is 55.

The square root of 99378883 is about 9968.8957763636. The cubic root of 99378883 is about 463.1958969328.

The spelling of 99378883 in words is "ninety-nine million, three hundred seventy-eight thousand, eight hundred eighty-three".