40629871 has 8 divisors (see below), whose sum is σ = 42159744. Its totient is φ = 39113760.

The previous prime is 40629863. The next prime is 40629877. The reversal of 40629871 is 17892604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40629871 - 2³ = 40629863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40629871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40629877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2781 + ... + 9433.

It is an arithmetic number, because the mean of its divisors is an integer number (5269968).

Almost surely, 2^40629871 is an apocalyptic number.

40629871 is a deficient number, since it is larger than the sum of its proper divisors (1529873).

40629871 is a wasteful number, since it uses less digits than its factorization.

40629871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6881.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 40629871 is about 6374.1564932154. The cubic root of 40629871 is about 343.7809556255.

The spelling of 40629871 in words is "forty million, six hundred twenty-nine thousand, eight hundred seventy-one".