40429253 has 4 divisors (see below), whose sum is σ = 40787148. Its totient is φ = 40071360.

The previous prime is 40429223. The next prime is 40429267. The reversal of 40429253 is 35292404.

40429253 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.

It can be written as a sum of positive squares in 2 ways, for example, as 1216609 + 39212644 = 1103^2 + 6262^2 .

It is a cyclic number.

It is not a de Polignac number, because 40429253 - 2²⁴ = 23652037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40429223) 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, 178778 + ... + 179003.

It is an arithmetic number, because the mean of its divisors is an integer number (10196787).

Almost surely, 2^40429253 is an apocalyptic number.

It is an amenable number.

40429253 is a deficient number, since it is larger than the sum of its proper divisors (357895).

40429253 is a wasteful number, since it uses less digits than its factorization.

40429253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357894.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 40429253 is about 6358.4001918722. The cubic root of 40429253 is about 343.2141930121.

The spelling of 40429253 in words is "forty million, four hundred twenty-nine thousand, two hundred fifty-three".