878638445 has 16 divisors (see below), whose sum is σ = 1105913088. Its totient is φ = 669355200.

The previous prime is 878638429. The next prime is 878638457. The reversal of 878638445 is 544836878.

It is not a de Polignac number, because 878638445 - 2⁴ = 878638429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41831 + ... + 59220.

It is an arithmetic number, because the mean of its divisors is an integer number (69119568).

Almost surely, 2^878638445 is an apocalyptic number.

It is an amenable number.

878638445 is a deficient number, since it is larger than the sum of its proper divisors (227274643).

878638445 is a wasteful number, since it uses less digits than its factorization.

878638445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101140.

The product of its digits is 5160960, while the sum is 53.

The square root of 878638445 is about 29641.8360598665. The cubic root of 878638445 is about 957.7894904173.

The spelling of 878638445 in words is "eight hundred seventy-eight million, six hundred thirty-eight thousand, four hundred forty-five".