4049623 has 4 divisors (see below), whose sum is σ = 4180288. Its totient is φ = 3918960.

The previous prime is 4049609. The next prime is 4049707. The reversal of 4049623 is 3269404.

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 4049623 - 2¹³ = 4041431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4049591 and 4049600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4049923) 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, 65286 + ... + 65347.

It is an arithmetic number, because the mean of its divisors is an integer number (1045072).

Almost surely, 2^4049623 is an apocalyptic number.

4049623 is a deficient number, since it is larger than the sum of its proper divisors (130665).

4049623 is a wasteful number, since it uses less digits than its factorization.

4049623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130664.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 4049623 is about 2012.3675111669. The cubic root of 4049623 is about 159.3938392698.

The spelling of 4049623 in words is "four million, forty-nine thousand, six hundred twenty-three".