40606939 has 2 divisors, whose sum is σ = 40606940. Its totient is φ = 40606938.

The previous prime is 40606913. The next prime is 40606961. The reversal of 40606939 is 93960604.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40606939 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40606898 and 40606907.

It is not a weakly prime, because it can be changed into another prime (40606039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20303469 + 20303470.

It is an arithmetic number, because the mean of its divisors is an integer number (20303470).

Almost surely, 2^40606939 is an apocalyptic number.

40606939 is a deficient number, since it is larger than the sum of its proper divisors (1).

40606939 is an equidigital number, since it uses as much as digits as its factorization.

40606939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 40606939 is about 6372.3574130772. The cubic root of 40606939 is about 343.7162653837.

The spelling of 40606939 in words is "forty million, six hundred six thousand, nine hundred thirty-nine".