40353623 has 4 divisors (see below), whose sum is σ = 40377000. Its totient is φ = 40330248.

The previous prime is 40353619. The next prime is 40353629. The reversal of 40353623 is 32635304.

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 40353623 - 2² = 40353619 is a prime.

It is a super-2 number, since 2×40353623² = 3256829778452258, 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 = 40353592 and 40353601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40353629) 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, 8873 + ... + 12626.

It is an arithmetic number, because the mean of its divisors is an integer number (10094250).

Almost surely, 2^40353623 is an apocalyptic number.

40353623 is a deficient number, since it is larger than the sum of its proper divisors (23377).

40353623 is a wasteful number, since it uses less digits than its factorization.

40353623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23376.

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 40353623 is about 6352.4501572228. The cubic root of 40353623 is about 343.0000453326. Note that the first 4 decimals are identical.

Adding to 40353623 its reverse (32635304), we get a palindrome (72988927).

The spelling of 40353623 in words is "forty million, three hundred fifty-three thousand, six hundred twenty-three".