878390 has 16 divisors (see below), whose sum is σ = 1674432. Its totient is φ = 330624.

The previous prime is 878387. The next prime is 878411. The reversal of 878390 is 93878.

It is a self number, because there is not a number n which added to its sum of digits gives 878390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2414 + ... + 2753.

It is an arithmetic number, because the mean of its divisors is an integer number (104652).

2⁸⁷⁸³⁹⁰ is an apocalyptic number.

878390 is a deficient number, since it is larger than the sum of its proper divisors (796042).

878390 is a wasteful number, since it uses less digits than its factorization.

878390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5191.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 878390 is about 937.2246262236. The cubic root of 878390 is about 95.7699206621.

The spelling of 878390 in words is "eight hundred seventy-eight thousand, three hundred ninety".