867217427 has 4 divisors (see below), whose sum is σ = 867527880. Its totient is φ = 866906976.

The previous prime is 867217409. The next prime is 867217451. The reversal of 867217427 is 724712768.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 867217427 - 2¹⁶ = 867151891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (867210427) 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 3 ways as a sum of consecutive naturals, for example, 150998 + ... + 156635.

It is an arithmetic number, because the mean of its divisors is an integer number (216881970).

Almost surely, 2^867217427 is an apocalyptic number.

867217427 is a deficient number, since it is larger than the sum of its proper divisors (310453).

867217427 is a wasteful number, since it uses less digits than its factorization.

867217427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310452.

The product of its digits is 263424, while the sum is 44.

The square root of 867217427 is about 29448.5556012515. Note that the first 3 decimals coincide. The cubic root of 867217427 is about 953.6214229361.

The spelling of 867217427 in words is "eight hundred sixty-seven million, two hundred seventeen thousand, four hundred twenty-seven".