40253705 has 16 divisors (see below), whose sum is σ = 51528960. Its totient is φ = 30081792.

The previous prime is 40253693. The next prime is 40253713. The reversal of 40253705 is 50735204.

It is a cyclic number.

It is not a de Polignac number, because 40253705 - 2²⁴ = 23476489 is a prime.

It is an unprimeable number.

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, 10112 + ... + 13518.

It is an arithmetic number, because the mean of its divisors is an integer number (3220560).

Almost surely, 2^40253705 is an apocalyptic number.

It is an amenable number.

40253705 is a deficient number, since it is larger than the sum of its proper divisors (11275255).

40253705 is a wasteful number, since it uses less digits than its factorization.

40253705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 40253705 is about 6344.5807584111. The cubic root of 40253705 is about 342.7167151021.

Adding to 40253705 its reverse (50735204), we get a palindrome (90988909).

The spelling of 40253705 in words is "forty million, two hundred fifty-three thousand, seven hundred five".