40284253 has 4 divisors (see below), whose sum is σ = 40326880. Its totient is φ = 40241628.

The previous prime is 40284191. The next prime is 40284287. The reversal of 40284253 is 35248204.

40284253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40284253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40284053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19863 + ... + 21796.

It is an arithmetic number, because the mean of its divisors is an integer number (10081720).

Almost surely, 2^40284253 is an apocalyptic number.

It is an amenable number.

40284253 is a deficient number, since it is larger than the sum of its proper divisors (42627).

40284253 is an equidigital number, since it uses as much as digits as its factorization.

40284253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42626.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 40284253 is about 6346.9877107176. The cubic root of 40284253 is about 342.8033875628.

It can be divided in two parts, 4028 and 4253, that added together give a square (8281 = 91²).

The spelling of 40284253 in words is "forty million, two hundred eighty-four thousand, two hundred fifty-three".