40253623 has 4 divisors (see below), whose sum is σ = 40414248. Its totient is φ = 40093000.

The previous prime is 40253617. The next prime is 40253627. The reversal of 40253623 is 32635204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40253623 is a prime.

It is a super-2 number, since 2×40253623² = 3240708329252258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40253627) 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, 79936 + ... + 80437.

It is an arithmetic number, because the mean of its divisors is an integer number (10103562).

Almost surely, 2^40253623 is an apocalyptic number.

40253623 is a deficient number, since it is larger than the sum of its proper divisors (160625).

40253623 is a wasteful number, since it uses less digits than its factorization.

40253623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160624.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 40253623 is about 6344.5742961999. The cubic root of 40253623 is about 342.7164823882.

Adding to 40253623 its reverse (32635204), we get a palindrome (72888827).

The spelling of 40253623 in words is "forty million, two hundred fifty-three thousand, six hundred twenty-three".