340272839 has 2 divisors, whose sum is σ = 340272840. Its totient is φ = 340272838.

The previous prime is 340272797. The next prime is 340272847. The reversal of 340272839 is 938272043.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (938272043) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340272839 is a prime.

It is a super-2 number, since 2×340272839² = 231571209922239842, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340272869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170136419 + 170136420.

It is an arithmetic number, because the mean of its divisors is an integer number (170136420).

Almost surely, 2^340272839 is an apocalyptic number.

340272839 is a deficient number, since it is larger than the sum of its proper divisors (1).

340272839 is an equidigital number, since it uses as much as digits as its factorization.

340272839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 340272839 is about 18446.4858170872. The cubic root of 340272839 is about 698.1398497296.

The spelling of 340272839 in words is "three hundred forty million, two hundred seventy-two thousand, eight hundred thirty-nine".