874278209 has 8 divisors (see below), whose sum is σ = 1008342720. Its totient is φ = 742505616.

The previous prime is 874278191. The next prime is 874278253. The reversal of 874278209 is 902872478.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 874278209 - 2²⁴ = 857500993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (874218209) 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 in 7 ways as a sum of consecutive naturals, for example, 572159 + ... + 573684.

It is an arithmetic number, because the mean of its divisors is an integer number (126042840).

Almost surely, 2^874278209 is an apocalyptic number.

It is an amenable number.

874278209 is a deficient number, since it is larger than the sum of its proper divisors (134064511).

874278209 is a wasteful number, since it uses less digits than its factorization.

874278209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145959.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 874278209 is about 29568.1959037071. The cubic root of 874278209 is about 956.2025216064.

The spelling of 874278209 in words is "eight hundred seventy-four million, two hundred seventy-eight thousand, two hundred nine".