271949921 has 2 divisors, whose sum is σ = 271949922. Its totient is φ = 271949920.

The previous prime is 271949891. The next prime is 271949959. The reversal of 271949921 is 129949172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 266864896 + 5085025 = 16336^2 + 2255^2 .

It is a cyclic number.

It is not a de Polignac number, because 271949921 - 2⁶ = 271949857 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (271949971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135974960 + 135974961.

It is an arithmetic number, because the mean of its divisors is an integer number (135974961).

Almost surely, 2^271949921 is an apocalyptic number.

It is an amenable number.

271949921 is a deficient number, since it is larger than the sum of its proper divisors (1).

271949921 is an equidigital number, since it uses as much as digits as its factorization.

271949921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 44.

The square root of 271949921 is about 16490.9041898860. The cubic root of 271949921 is about 647.8825939621.

The spelling of 271949921 in words is "two hundred seventy-one million, nine hundred forty-nine thousand, nine hundred twenty-one".