40623623 has 4 divisors (see below), whose sum is σ = 40669320. Its totient is φ = 40577928.

The previous prime is 40623607. The next prime is 40623643. The reversal of 40623623 is 32632604.

40623623 is nontrivially palindromic in base 14.

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 40623623 - 2⁴ = 40623607 is a prime.

It is a super-2 number, since 2×40623623² = 3300557491292258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40623592 and 40623601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40623643) 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, 21488 + ... + 23301.

It is an arithmetic number, because the mean of its divisors is an integer number (10167330).

Almost surely, 2^40623623 is an apocalyptic number.

40623623 is a deficient number, since it is larger than the sum of its proper divisors (45697).

40623623 is an equidigital number, since it uses as much as digits as its factorization.

40623623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45696.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 40623623 is about 6373.6663703084. Note that the first 3 decimals coincide. The cubic root of 40623623 is about 343.7633326840.

The spelling of 40623623 in words is "forty million, six hundred twenty-three thousand, six hundred twenty-three".