40653443 has 16 divisors (see below), whose sum is σ = 45251136. Its totient is φ = 36326400.

The previous prime is 40653433. The next prime is 40653461. The reversal of 40653443 is 34435604.

It is a cyclic number.

It is not a de Polignac number, because 40653443 - 2⁸ = 40653187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40653413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67343 + ... + 67943.

It is an arithmetic number, because the mean of its divisors is an integer number (2828196).

Almost surely, 2^40653443 is an apocalyptic number.

40653443 is a deficient number, since it is larger than the sum of its proper divisors (4597693).

40653443 is a wasteful number, since it uses less digits than its factorization.

40653443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814.

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 40653443 is about 6376.0052540756. The cubic root of 40653443 is about 343.8474259165.

The spelling of 40653443 in words is "forty million, six hundred fifty-three thousand, four hundred forty-three".