740279 has 2 divisors, whose sum is σ = 740280. Its totient is φ = 740278.

The previous prime is 740237. The next prime is 740287. The reversal of 740279 is 972047.

It is a strong prime.

It is an emirp because it is prime and its reverse (972047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 740279 - 2⁸ = 740023 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (743279) 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 as a sum of consecutive naturals, namely, 370139 + 370140.

It is an arithmetic number, because the mean of its divisors is an integer number (370140).

2⁷⁴⁰²⁷⁹ is an apocalyptic number.

740279 is a deficient number, since it is larger than the sum of its proper divisors (1).

740279 is an equidigital number, since it uses as much as digits as its factorization.

740279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 740279 is about 860.3946768780. The cubic root of 740279 is about 90.4617829541.

The spelling of 740279 in words is "seven hundred forty thousand, two hundred seventy-nine".