340279 has 4 divisors (see below), whose sum is σ = 342360. Its totient is φ = 338200.

The previous prime is 340267. The next prime is 340283. The reversal of 340279 is 972043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 972043 = 17 ⋅57179.

It is a cyclic number.

It is not a de Polignac number, because 340279 - 2¹¹ = 338231 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 772 + ... + 1129.

It is an arithmetic number, because the mean of its divisors is an integer number (85590).

2³⁴⁰²⁷⁹ is an apocalyptic number.

340279 is a deficient number, since it is larger than the sum of its proper divisors (2081).

340279 is a wasteful number, since it uses less digits than its factorization.

340279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 340279 is about 583.3343809514. The cubic root of 340279 is about 69.8144063225.

It can be divided in two parts, 3402 and 79, that added together give a square (3481 = 59²).

The spelling of 340279 in words is "three hundred forty thousand, two hundred seventy-nine".