84838778 has 8 divisors (see below), whose sum is σ = 127392672. Its totient is φ = 42374556.

The previous prime is 84838777. The next prime is 84838783. The reversal of 84838778 is 87783848.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (84838777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20000 + ... + 23867.

It is an arithmetic number, because the mean of its divisors is an integer number (15924084).

Almost surely, 2^84838778 is an apocalyptic number.

84838778 is a deficient number, since it is larger than the sum of its proper divisors (42553894).

84838778 is a wasteful number, since it uses less digits than its factorization.

84838778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44836.

The product of its digits is 2408448, while the sum is 53.

The square root of 84838778 is about 9210.7968167798. The cubic root of 84838778 is about 439.4048047367.

The spelling of 84838778 in words is "eighty-four million, eight hundred thirty-eight thousand, seven hundred seventy-eight".