7914217209 has 16 divisors (see below), whose sum is σ = 11001431232. Its totient is φ = 5056204608.

The previous prime is 7914217183. The next prime is 7914217319. The reversal of 7914217209 is 9027124197.

It is not a de Polignac number, because 7914217209 - 2⁹ = 7914216697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7914215209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571942 + ... + 585615.

It is an arithmetic number, because the mean of its divisors is an integer number (687589452).

Almost surely, 2^7914217209 is an apocalyptic number.

It is an amenable number.

7914217209 is a deficient number, since it is larger than the sum of its proper divisors (3087214023).

7914217209 is a wasteful number, since it uses less digits than its factorization.

7914217209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157656.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 7914217209 is about 88961.8862715939. The cubic root of 7914217209 is about 1992.8257297785.

The spelling of 7914217209 in words is "seven billion, nine hundred fourteen million, two hundred seventeen thousand, two hundred nine".