40053443 has 4 divisors (see below), whose sum is σ = 40617648. Its totient is φ = 39489240.

The previous prime is 40053439. The next prime is 40053451. The reversal of 40053443 is 34435004.

It is a happy number.

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 40053443 - 2² = 40053439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40053413) 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, 281996 + ... + 282137.

It is an arithmetic number, because the mean of its divisors is an integer number (10154412).

Almost surely, 2^40053443 is an apocalyptic number.

40053443 is a deficient number, since it is larger than the sum of its proper divisors (564205).

40053443 is an equidigital number, since it uses as much as digits as its factorization.

40053443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564204.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 40053443 is about 6328.7789501609. The cubic root of 40053443 is about 342.1474319605.

Adding to 40053443 its reverse (34435004), we get a palindrome (74488447).

The spelling of 40053443 in words is "forty million, fifty-three thousand, four hundred forty-three".