40671917 has 16 divisors (see below), whose sum is σ = 49080192. Its totient is φ = 33203520.

The previous prime is 40671901. The next prime is 40671929. The reversal of 40671917 is 71917604.

It is a cyclic number.

It is not a de Polignac number, because 40671917 - 2⁴ = 40671901 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 (40671947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1448 + ... + 9134.

It is an arithmetic number, because the mean of its divisors is an integer number (3067512).

Almost surely, 2^40671917 is an apocalyptic number.

It is an amenable number.

40671917 is a deficient number, since it is larger than the sum of its proper divisors (8408275).

40671917 is a wasteful number, since it uses less digits than its factorization.

40671917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7748.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 40671917 is about 6377.4538022631. The cubic root of 40671917 is about 343.8995024847.

The spelling of 40671917 in words is "forty million, six hundred seventy-one thousand, nine hundred seventeen".