878897842 has 4 divisors (see below), whose sum is σ = 1318346766. Its totient is φ = 439448920.

The previous prime is 878897837. The next prime is 878897843. The reversal of 878897842 is 248798878.

878897842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 800946601 + 77951241 = 28301^2 + 8829^2 .

It is a super-2 number, since 2×878897842² = 1544922833344513928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (878897843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219724459 + ... + 219724462.

Almost surely, 2^878897842 is an apocalyptic number.

878897842 is a deficient number, since it is larger than the sum of its proper divisors (439448924).

878897842 is a wasteful number, since it uses less digits than its factorization.

878897842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439448923.

The product of its digits is 14450688, while the sum is 61.

The square root of 878897842 is about 29646.2112587764. The cubic root of 878897842 is about 957.8837359615.

The spelling of 878897842 in words is "eight hundred seventy-eight million, eight hundred ninety-seven thousand, eight hundred forty-two".