40508623 has 4 divisors (see below), whose sum is σ = 41450728. Its totient is φ = 39566520.

The previous prime is 40508609. The next prime is 40508641. The reversal of 40508623 is 32680504.

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 40508623 - 2⁵ = 40508591 is a prime.

It is a super-2 number, since 2×40508623² = 3281897074712258, 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 = 40508591 and 40508600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40538623) 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, 470988 + ... + 471073.

It is an arithmetic number, because the mean of its divisors is an integer number (10362682).

Almost surely, 2^40508623 is an apocalyptic number.

40508623 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

40508623 is a deficient number, since it is larger than the sum of its proper divisors (942105).

40508623 is an equidigital number, since it uses as much as digits as its factorization.

40508623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942104.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 40508623 is about 6364.6384814850. The cubic root of 40508623 is about 343.4386435572.

The spelling of 40508623 in words is "forty million, five hundred eight thousand, six hundred twenty-three".