276056399 has 4 divisors (see below), whose sum is σ = 276785160. Its totient is φ = 275327640.

The previous prime is 276056369. The next prime is 276056411. The reversal of 276056399 is 993650672.

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 276056399 - 2¹⁶ = 275990863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276056329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363812 + ... + 364569.

It is an arithmetic number, because the mean of its divisors is an integer number (69196290).

Almost surely, 2^276056399 is an apocalyptic number.

276056399 is a deficient number, since it is larger than the sum of its proper divisors (728761).

276056399 is an equidigital number, since it uses as much as digits as its factorization.

276056399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728760.

The product of its (nonzero) digits is 612360, while the sum is 47.

The square root of 276056399 is about 16614.9450495631. The cubic root of 276056399 is about 651.1273524782.

The spelling of 276056399 in words is "two hundred seventy-six million, fifty-six thousand, three hundred ninety-nine".