276488947 has 4 divisors (see below), whose sum is σ = 315987376. Its totient is φ = 236990520.

The previous prime is 276488939. The next prime is 276488983. The reversal of 276488947 is 749884672.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 276488947 - 2³ = 276488939 is a prime.

It is a super-2 number, since 2×276488947² = 152892275626337618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (276488917) 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, 19749204 + ... + 19749217.

It is an arithmetic number, because the mean of its divisors is an integer number (78996844).

Almost surely, 2^276488947 is an apocalyptic number.

276488947 is a deficient number, since it is larger than the sum of its proper divisors (39498429).

276488947 is an equidigital number, since it uses as much as digits as its factorization.

276488947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39498428.

The product of its digits is 5419008, while the sum is 55.

The square root of 276488947 is about 16627.9567896961. The cubic root of 276488947 is about 651.4672550755.

The spelling of 276488947 in words is "two hundred seventy-six million, four hundred eighty-eight thousand, nine hundred forty-seven".