867428169 has 4 divisors (see below), whose sum is σ = 1156570896. Its totient is φ = 578285444.

The previous prime is 867428123. The next prime is 867428183. The reversal of 867428169 is 961824768.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 867428169 - 2⁷ = 867428041 is a prime.

It is a super-2 number, since 2×867428169² = 1504863256749385122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (867428119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144571359 + ... + 144571364.

It is an arithmetic number, because the mean of its divisors is an integer number (289142724).

Almost surely, 2^867428169 is an apocalyptic number.

It is an amenable number.

867428169 is a deficient number, since it is larger than the sum of its proper divisors (289142727).

867428169 is a wasteful number, since it uses less digits than its factorization.

867428169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289142726.

The product of its digits is 1161216, while the sum is 51.

The square root of 867428169 is about 29452.1335220388. The cubic root of 867428169 is about 953.6986630079.

The spelling of 867428169 in words is "eight hundred sixty-seven million, four hundred twenty-eight thousand, one hundred sixty-nine".