340940029 has 4 divisors (see below), whose sum is σ = 341142400. Its totient is φ = 340737660.

The previous prime is 340939993. The next prime is 340940057. The reversal of 340940029 is 920049043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 920049043 = 449 ⋅2049107.

It is a cyclic number.

It is not a de Polignac number, because 340940029 - 2⁹ = 340939517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340940059) 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, 98637 + ... + 102034.

It is an arithmetic number, because the mean of its divisors is an integer number (85285600).

Almost surely, 2^340940029 is an apocalyptic number.

It is an amenable number.

340940029 is a deficient number, since it is larger than the sum of its proper divisors (202371).

340940029 is a wasteful number, since it uses less digits than its factorization.

340940029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202370.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 340940029 is about 18464.5614353550. The cubic root of 340940029 is about 698.5958444200.

The spelling of 340940029 in words is "three hundred forty million, nine hundred forty thousand, twenty-nine".