40437613 has 2 divisors, whose sum is σ = 40437614. Its totient is φ = 40437612.

The previous prime is 40437589. The next prime is 40437619. The reversal of 40437613 is 31673404.

40437613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36036009 + 4401604 = 6003^2 + 2098^2 .

It is a cyclic number.

It is not a de Polignac number, because 40437613 - 2⁵ = 40437581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40437619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20218806 + 20218807.

It is an arithmetic number, because the mean of its divisors is an integer number (20218807).

Almost surely, 2^40437613 is an apocalyptic number.

It is an amenable number.

40437613 is a deficient number, since it is larger than the sum of its proper divisors (1).

40437613 is an equidigital number, since it uses as much as digits as its factorization.

40437613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 40437613 is about 6359.0575559591. The cubic root of 40437613 is about 343.2378481025.

The spelling of 40437613 in words is "forty million, four hundred thirty-seven thousand, six hundred thirteen".