878440738 has 24 divisors (see below), whose sum is σ = 1582239744. Its totient is φ = 364329000.

The previous prime is 878440729. The next prime is 878440747. The reversal of 878440738 is 837044878.

It is a happy number.

878440738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (878440729) and next prime (878440747).

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 878440691 and 878440700.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141538 + ... + 147613.

It is an arithmetic number, because the mean of its divisors is an integer number (65926656).

Almost surely, 2^878440738 is an apocalyptic number.

878440738 is a deficient number, since it is larger than the sum of its proper divisors (703799006).

878440738 is a wasteful number, since it uses less digits than its factorization.

878440738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289198 (or 289191 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 49.

The square root of 878440738 is about 29638.5009404997. The cubic root of 878440738 is about 957.7176459657.

The spelling of 878440738 in words is "eight hundred seventy-eight million, four hundred forty thousand, seven hundred thirty-eight".