40624019 has 2 divisors, whose sum is σ = 40624020. Its totient is φ = 40624018.

The previous prime is 40624013. The next prime is 40624021. The reversal of 40624019 is 91042604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40624019 - 2⁸ = 40623763 is a prime.

It is a super-2 number, since 2×40624019² = 3300621839424722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 40624021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40624013) 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, 20312009 + 20312010.

It is an arithmetic number, because the mean of its divisors is an integer number (20312010).

Almost surely, 2^40624019 is an apocalyptic number.

40624019 is a deficient number, since it is larger than the sum of its proper divisors (1).

40624019 is an equidigital number, since it uses as much as digits as its factorization.

40624019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 40624019 is about 6373.6974355550. The cubic root of 40624019 is about 343.7644496846.

The spelling of 40624019 in words is "forty million, six hundred twenty-four thousand, nineteen".