40429871 has 4 divisors (see below), whose sum is σ = 40497744. Its totient is φ = 40362000.

The previous prime is 40429867. The next prime is 40429889. The reversal of 40429871 is 17892404.

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 40429871 - 2² = 40429867 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 (40429801) 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, 33035 + ... + 34236.

It is an arithmetic number, because the mean of its divisors is an integer number (10124436).

Almost surely, 2^40429871 is an apocalyptic number.

40429871 is a deficient number, since it is larger than the sum of its proper divisors (67873).

40429871 is an equidigital number, since it uses as much as digits as its factorization.

40429871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67872.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 40429871 is about 6358.4487888163. The cubic root of 40429871 is about 343.2159417895.

The spelling of 40429871 in words is "forty million, four hundred twenty-nine thousand, eight hundred seventy-one".