40608929 has 2 divisors, whose sum is σ = 40608930. Its totient is φ = 40608928.

The previous prime is 40608913. The next prime is 40608959. The reversal of 40608929 is 92980604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21669025 + 18939904 = 4655^2 + 4352^2 .

It is a cyclic number.

It is not a de Polignac number, because 40608929 - 2⁴ = 40608913 is a prime.

It is a super-2 number, since 2×40608929² = 3298170229054082, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40608892 and 40608901.

It is not a weakly prime, because it can be changed into another prime (40608959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20304464 + 20304465.

It is an arithmetic number, because the mean of its divisors is an integer number (20304465).

Almost surely, 2^40608929 is an apocalyptic number.

It is an amenable number.

40608929 is a deficient number, since it is larger than the sum of its proper divisors (1).

40608929 is an equidigital number, since it uses as much as digits as its factorization.

40608929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 40608929 is about 6372.5135543206. The cubic root of 40608929 is about 343.7218800579.

The spelling of 40608929 in words is "forty million, six hundred eight thousand, nine hundred twenty-nine".