276742379 has 2 divisors, whose sum is σ = 276742380. Its totient is φ = 276742378.

The previous prime is 276742373. The next prime is 276742397. The reversal of 276742379 is 973247672.

Together with next prime (276742397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-276742379 is a prime.

It is not a weakly prime, because it can be changed into another prime (276742373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138371189 + 138371190.

It is an arithmetic number, because the mean of its divisors is an integer number (138371190).

Almost surely, 2^276742379 is an apocalyptic number.

276742379 is a deficient number, since it is larger than the sum of its proper divisors (1).

276742379 is an equidigital number, since it uses as much as digits as its factorization.

276742379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 47.

The square root of 276742379 is about 16635.5757038944. The cubic root of 276742379 is about 651.6662410049. Note that the first 3 decimals are identical.

The spelling of 276742379 in words is "two hundred seventy-six million, seven hundred forty-two thousand, three hundred seventy-nine".