867909261 has 16 divisors (see below), whose sum is σ = 1170672768. Its totient is φ = 571896000.

The previous prime is 867909257. The next prime is 867909271. The reversal of 867909261 is 162909768.

It is not a de Polignac number, because 867909261 - 2² = 867909257 is a prime.

It is a super-2 number, since 2×867909261² = 1506532970659132242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 867909261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867909241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203016 + ... + 207246.

It is an arithmetic number, because the mean of its divisors is an integer number (73167048).

Almost surely, 2^867909261 is an apocalyptic number.

It is an amenable number.

867909261 is a deficient number, since it is larger than the sum of its proper divisors (302763507).

867909261 is a wasteful number, since it uses less digits than its factorization.

867909261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5012.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 867909261 is about 29460.2997438926. The cubic root of 867909261 is about 953.8749435027.

The spelling of 867909261 in words is "eight hundred sixty-seven million, nine hundred nine thousand, two hundred sixty-one".