40630039 has 2 divisors, whose sum is σ = 40630040. Its totient is φ = 40630038.

The previous prime is 40630019. The next prime is 40630069. The reversal of 40630039 is 93003604.

40630039 is nontrivially palindromic in base 13.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40630039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40629995 and 40630022.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40630019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20315019 + 20315020.

It is an arithmetic number, because the mean of its divisors is an integer number (20315020).

Almost surely, 2^40630039 is an apocalyptic number.

40630039 is a deficient number, since it is larger than the sum of its proper divisors (1).

40630039 is an equidigital number, since it uses as much as digits as its factorization.

40630039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 40630039 is about 6374.1696714160. The cubic root of 40630039 is about 343.7814294569.

The spelling of 40630039 in words is "forty million, six hundred thirty thousand, thirty-nine".