276989 has 4 divisors (see below), whose sum is σ = 289056. Its totient is φ = 264924.

The previous prime is 276977. The next prime is 277003. The reversal of 276989 is 989672.

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 a de Polignac number, because none of the positive numbers 2^k-276989 is a prime.

It is a super-2 number, since 2×276989² = 153445812242, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276919) 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, 5999 + ... + 6044.

It is an arithmetic number, because the mean of its divisors is an integer number (72264).

2²⁷⁶⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

276989 is a deficient number, since it is larger than the sum of its proper divisors (12067).

276989 is a wasteful number, since it uses less digits than its factorization.

276989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12066.

The product of its digits is 54432, while the sum is 41.

The square root of 276989 is about 526.2974444171. The cubic root of 276989 is about 65.1859762580.

The spelling of 276989 in words is "two hundred seventy-six thousand, nine hundred eighty-nine".