271639069 has 8 divisors (see below), whose sum is σ = 294499800. Its totient is φ = 249059136.

The previous prime is 271639061. The next prime is 271639097. The reversal of 271639069 is 960936172.

It can be written as a sum of positive squares in 4 ways, for example, as 27092025 + 244547044 = 5205^2 + 15638^2 .

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 271639069 - 2³ = 271639061 is a prime.

It is a super-2 number, since 2×271639069² = 147575567614373522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (271639061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68182 + ... + 72055.

It is an arithmetic number, because the mean of its divisors is an integer number (36812475).

Almost surely, 2^271639069 is an apocalyptic number.

It is an amenable number.

271639069 is a deficient number, since it is larger than the sum of its proper divisors (22860731).

271639069 is a wasteful number, since it uses less digits than its factorization.

271639069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140399.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 271639069 is about 16481.4765418636. The cubic root of 271639069 is about 647.6356460643.

The spelling of 271639069 in words is "two hundred seventy-one million, six hundred thirty-nine thousand, sixty-nine".