40001629 has 8 divisors (see below), whose sum is σ = 42752448. Its totient is φ = 37295040.

The previous prime is 40001627. The next prime is 40001641. The reversal of 40001629 is 92610004.

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 40001629 - 2¹ = 40001627 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 (40001627) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9177 + ... + 12814.

It is an arithmetic number, because the mean of its divisors is an integer number (5344056).

Almost surely, 2^40001629 is an apocalyptic number.

It is an amenable number.

40001629 is a deficient number, since it is larger than the sum of its proper divisors (2750819).

40001629 is a wasteful number, since it uses less digits than its factorization.

40001629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22115.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 40001629 is about 6324.6841027833. The cubic root of 40001629 is about 341.9998318570. Note that the first 3 decimals are identical.

The spelling of 40001629 in words is "forty million, one thousand, six hundred twenty-nine".