40471621 has 8 divisors (see below), whose sum is σ = 41109120. Its totient is φ = 39837408.

The previous prime is 40471597. The next prime is 40471661. The reversal of 40471621 is 12617404.

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 40471621 - 2¹³ = 40463429 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 (40471661) 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, 36345 + ... + 37441.

It is an arithmetic number, because the mean of its divisors is an integer number (5138640).

Almost surely, 2^40471621 is an apocalyptic number.

It is an amenable number.

40471621 is a deficient number, since it is larger than the sum of its proper divisors (637499).

40471621 is a wasteful number, since it uses less digits than its factorization.

40471621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 40471621 is about 6361.7309751356. The cubic root of 40471621 is about 343.3340420593.

The spelling of 40471621 in words is "forty million, four hundred seventy-one thousand, six hundred twenty-one".