623394069 has 4 divisors (see below), whose sum is σ = 831192096. Its totient is φ = 415596044.

The previous prime is 623394067. The next prime is 623394073. The reversal of 623394069 is 960493326.

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.

It is a cyclic number.

It is not a de Polignac number, because 623394069 - 2¹ = 623394067 is a prime.

It is a super-2 number, since 2×623394069² = 777240330528753522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 623394069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623394067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103899009 + ... + 103899014.

It is an arithmetic number, because the mean of its divisors is an integer number (207798024).

Almost surely, 2^623394069 is an apocalyptic number.

It is an amenable number.

623394069 is a deficient number, since it is larger than the sum of its proper divisors (207798027).

623394069 is a wasteful number, since it uses less digits than its factorization.

623394069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207798026.

The product of its (nonzero) digits is 209952, while the sum is 42.

The square root of 623394069 is about 24967.8607213353. The cubic root of 623394069 is about 854.2550509988.

The spelling of 623394069 in words is "six hundred twenty-three million, three hundred ninety-four thousand, sixty-nine".