34390823 has 4 divisors (see below), whose sum is σ = 34490280. Its totient is φ = 34291368.

The previous prime is 34390789. The next prime is 34390831. The reversal of 34390823 is 32809343.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 34390823 - 2¹⁰ = 34389799 is a prime.

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 34390823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34390423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49208 + ... + 49901.

It is an arithmetic number, because the mean of its divisors is an integer number (8622570).

Almost surely, 2^34390823 is an apocalyptic number.

34390823 is a deficient number, since it is larger than the sum of its proper divisors (99457).

34390823 is an equidigital number, since it uses as much as digits as its factorization.

34390823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99456.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 34390823 is about 5864.3689345061. The cubic root of 34390823 is about 325.1977431715.

The spelling of 34390823 in words is "thirty-four million, three hundred ninety thousand, eight hundred twenty-three".