40679289 has 12 divisors (see below), whose sum is σ = 67153216. Its totient is φ = 23245272.

The previous prime is 40679281. The next prime is 40679291. The reversal of 40679289 is 98297604.

It is a happy number.

It is not a de Polignac number, because 40679289 - 2³ = 40679281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40679281) 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, 322789 + ... + 322914.

Almost surely, 2^40679289 is an apocalyptic number.

It is an amenable number.

40679289 is a deficient number, since it is larger than the sum of its proper divisors (26473927).

40679289 is a wasteful number, since it uses less digits than its factorization.

40679289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645716 (or 645713 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 40679289 is about 6378.0317496858. The cubic root of 40679289 is about 343.9202790971.

The spelling of 40679289 in words is "forty million, six hundred seventy-nine thousand, two hundred eighty-nine".