878994499 has 2 divisors, whose sum is σ = 878994500. Its totient is φ = 878994498.

The previous prime is 878994419. The next prime is 878994521. The reversal of 878994499 is 994499878.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 878994499 - 2²¹ = 876897347 is a prime.

It is a super-2 number, since 2×878994499² = 1545262658544522002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (878994409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439497249 + 439497250.

It is an arithmetic number, because the mean of its divisors is an integer number (439497250).

Almost surely, 2^878994499 is an apocalyptic number.

878994499 is a deficient number, since it is larger than the sum of its proper divisors (1).

878994499 is an equidigital number, since it uses as much as digits as its factorization.

878994499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47029248, while the sum is 67.

The square root of 878994499 is about 29647.8413885396. The cubic root of 878994499 is about 957.9188491718.

The spelling of 878994499 in words is "eight hundred seventy-eight million, nine hundred ninety-four thousand, four hundred ninety-nine".