878141409 has 16 divisors (see below), whose sum is σ = 1246233600. Its totient is φ = 548099840.

The previous prime is 878141389. The next prime is 878141417. The reversal of 878141409 is 904141878.

It is a cyclic number.

It is not a de Polignac number, because 878141409 - 2⁵ = 878141377 is a prime.

It is a super-2 number, since 2×878141409² = 1542264668401010562, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (878140409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35334 + ... + 54815.

It is an arithmetic number, because the mean of its divisors is an integer number (77889600).

Almost surely, 2^878141409 is an apocalyptic number.

It is an amenable number.

878141409 is a deficient number, since it is larger than the sum of its proper divisors (368092191).

878141409 is a wasteful number, since it uses less digits than its factorization.

878141409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90360.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 878141409 is about 29633.4508452863. The cubic root of 878141409 is about 957.6088527293.

The spelling of 878141409 in words is "eight hundred seventy-eight million, one hundred forty-one thousand, four hundred nine".