40344253 has 8 divisors (see below), whose sum is σ = 41025600. Its totient is φ = 39666528.

The previous prime is 40344229. The next prime is 40344257. The reversal of 40344253 is 35244304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40344253 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40344257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29928 + ... + 31246.

It is an arithmetic number, because the mean of its divisors is an integer number (5128200).

Almost surely, 2^40344253 is an apocalyptic number.

It is an amenable number.

40344253 is a deficient number, since it is larger than the sum of its proper divisors (681347).

40344253 is a wasteful number, since it uses less digits than its factorization.

40344253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 40344253 is about 6351.7126036999. The cubic root of 40344253 is about 342.9734953893.

Adding to 40344253 its reverse (35244304), we get a palindrome (75588557).

The spelling of 40344253 in words is "forty million, three hundred forty-four thousand, two hundred fifty-three".