40679905 has 16 divisors (see below), whose sum is σ = 57590784. Its totient is φ = 26994240.

The previous prime is 40679897. The next prime is 40679911. The reversal of 40679905 is 50997604.

It is not a de Polignac number, because 40679905 - 2³ = 40679897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17662 + ... + 19831.

It is an arithmetic number, because the mean of its divisors is an integer number (3599424).

Almost surely, 2^40679905 is an apocalyptic number.

It is an amenable number.

40679905 is a deficient number, since it is larger than the sum of its proper divisors (16910879).

40679905 is a wasteful number, since it uses less digits than its factorization.

40679905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37536.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 40679905 is about 6378.0800402629. The cubic root of 40679905 is about 343.9220150650.

The spelling of 40679905 in words is "forty million, six hundred seventy-nine thousand, nine hundred five".