340729019 has 4 divisors (see below), whose sum is σ = 340915344. Its totient is φ = 340542696.

The previous prime is 340729009. The next prime is 340729021. The reversal of 340729019 is 910927043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910927043 = 13 ⋅70071311.

It is a cyclic number.

It is not a de Polignac number, because 340729019 - 2⁴ = 340729003 is a prime.

It is a super-2 number, since 2×340729019² = 232192528777404722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340729019.

It is not an unprimeable number, because it can be changed into a prime (340729009) 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, 90392 + ... + 94085.

It is an arithmetic number, because the mean of its divisors is an integer number (85228836).

Almost surely, 2^340729019 is an apocalyptic number.

340729019 is a deficient number, since it is larger than the sum of its proper divisors (186325).

340729019 is a wasteful number, since it uses less digits than its factorization.

340729019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186324.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 340729019 is about 18458.8466324416. The cubic root of 340729019 is about 698.4516928409.

The spelling of 340729019 in words is "three hundred forty million, seven hundred twenty-nine thousand, nineteen".