34640423 has 4 divisors (see below), whose sum is σ = 35757888. Its totient is φ = 33522960.

The previous prime is 34640383. The next prime is 34640447. The reversal of 34640423 is 32404643.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32404643 = 157 ⋅206399.

It is a cyclic number.

It is not a de Polignac number, because 34640423 - 2⁸ = 34640167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34640392 and 34640401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34640483) 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, 558686 + ... + 558747.

It is an arithmetic number, because the mean of its divisors is an integer number (8939472).

Almost surely, 2^34640423 is an apocalyptic number.

34640423 is a deficient number, since it is larger than the sum of its proper divisors (1117465).

34640423 is a wasteful number, since it uses less digits than its factorization.

34640423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117464.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 34640423 is about 5885.6115230280. The cubic root of 34640423 is about 325.9825821549.

The spelling of 34640423 in words is "thirty-four million, six hundred forty thousand, four hundred twenty-three".