878107397 has 4 divisors (see below), whose sum is σ = 878531040. Its totient is φ = 877683756.

The previous prime is 878107369. The next prime is 878107403. The reversal of 878107397 is 793701878.

878107397 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 878107397 - 2²⁸ = 609671941 is a prime.

It is a super-2 number, since 2×878107397² = 1542145201332231218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878107367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208697 + ... + 212862.

It is an arithmetic number, because the mean of its divisors is an integer number (219632760).

Almost surely, 2^878107397 is an apocalyptic number.

It is an amenable number.

878107397 is a deficient number, since it is larger than the sum of its proper divisors (423643).

878107397 is a wasteful number, since it uses less digits than its factorization.

878107397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423642.

The product of its (nonzero) digits is 592704, while the sum is 50.

The square root of 878107397 is about 29632.8769612402. The cubic root of 878107397 is about 957.5964892639.

The spelling of 878107397 in words is "eight hundred seventy-eight million, one hundred seven thousand, three hundred ninety-seven".