878450722 has 4 divisors (see below), whose sum is σ = 1317676086. Its totient is φ = 439225360.

The previous prime is 878450719. The next prime is 878450723. The reversal of 878450722 is 227054878.

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

It can be written as a sum of positive squares in only one way, i.e., 874325761 + 4124961 = 29569^2 + 2031^2 .

It is not an unprimeable number, because it can be changed into a prime (878450723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219612679 + ... + 219612682.

Almost surely, 2^878450722 is an apocalyptic number.

878450722 is a deficient number, since it is larger than the sum of its proper divisors (439225364).

878450722 is a wasteful number, since it uses less digits than its factorization.

878450722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439225363.

The product of its (nonzero) digits is 250880, while the sum is 43.

The square root of 878450722 is about 29638.6693695922. The cubic root of 878450722 is about 957.7212742950.

The spelling of 878450722 in words is "eight hundred seventy-eight million, four hundred fifty thousand, seven hundred twenty-two".