40999917 has 12 divisors (see below), whose sum is σ = 63591936. Its totient is φ = 23428440.

The previous prime is 40999843. The next prime is 40999921. The reversal of 40999917 is 71999904.

It is not a de Polignac number, because 40999917 - 2⁸ = 40999661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40999117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139309 + ... + 139602.

It is an arithmetic number, because the mean of its divisors is an integer number (5299328).

Almost surely, 2^40999917 is an apocalyptic number.

It is an amenable number.

40999917 is a deficient number, since it is larger than the sum of its proper divisors (22592019).

40999917 is a wasteful number, since it uses less digits than its factorization.

40999917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278928 (or 278921 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 48.

The square root of 40999917 is about 6403.1177562185. The cubic root of 40999917 is about 344.8214913535.

The spelling of 40999917 in words is "forty million, nine hundred ninety-nine thousand, nine hundred seventeen".