878134403 has 2 divisors, whose sum is σ = 878134404. Its totient is φ = 878134402.

The previous prime is 878134399. The next prime is 878134409. The reversal of 878134403 is 304431878.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 878134403 - 2² = 878134399 is a prime.

It is a super-2 number, since 2×878134403² = 1542240059464332818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (878134409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439067201 + 439067202.

It is an arithmetic number, because the mean of its divisors is an integer number (439067202).

Almost surely, 2^878134403 is an apocalyptic number.

878134403 is a deficient number, since it is larger than the sum of its proper divisors (1).

878134403 is an equidigital number, since it uses as much as digits as its factorization.

878134403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 878134403 is about 29633.3326340457. The cubic root of 878134403 is about 957.6063060531.

The spelling of 878134403 in words is "eight hundred seventy-eight million, one hundred thirty-four thousand, four hundred three".