276390947 has 16 divisors (see below), whose sum is σ = 345249792. Its totient is φ = 215775360.

The previous prime is 276390941. The next prime is 276390953. The reversal of 276390947 is 749093672.

It is an interprime number because it is at equal distance from previous prime (276390941) and next prime (276390953).

It is a cyclic number.

It is not a de Polignac number, because 276390947 - 2²⁸ = 7955491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (276390941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33773 + ... + 41150.

It is an arithmetic number, because the mean of its divisors is an integer number (21578112).

Almost surely, 2^276390947 is an apocalyptic number.

276390947 is a deficient number, since it is larger than the sum of its proper divisors (68858845).

276390947 is a wasteful number, since it uses less digits than its factorization.

276390947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74978.

The product of its (nonzero) digits is 571536, while the sum is 47.

The square root of 276390947 is about 16625.0096842077. The cubic root of 276390947 is about 651.3902763075.

The spelling of 276390947 in words is "two hundred seventy-six million, three hundred ninety thousand, nine hundred forty-seven".