276490849 has 4 divisors (see below), whose sum is σ = 278089236. Its totient is φ = 274892464.

The previous prime is 276490847. The next prime is 276490853. The reversal of 276490849 is 948094672.

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

It can be written as a sum of positive squares in 2 ways, for example, as 111830625 + 164660224 = 10575^2 + 12832^2 .

It is a cyclic number.

It is not a de Polignac number, because 276490849 - 2¹ = 276490847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (276490847) 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, 798934 + ... + 799279.

It is an arithmetic number, because the mean of its divisors is an integer number (69522309).

Almost surely, 2^276490849 is an apocalyptic number.

It is an amenable number.

276490849 is a deficient number, since it is larger than the sum of its proper divisors (1598387).

276490849 is a wasteful number, since it uses less digits than its factorization.

276490849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598386.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 276490849 is about 16628.0139824334. The cubic root of 276490849 is about 651.4687489120.

The spelling of 276490849 in words is "two hundred seventy-six million, four hundred ninety thousand, eight hundred forty-nine".