40599421 has 2 divisors, whose sum is σ = 40599422. Its totient is φ = 40599420.

The previous prime is 40599373. The next prime is 40599469. The reversal of 40599421 is 12499504.

It is a balanced prime because it is at equal distance from previous prime (40599373) and next prime (40599469).

It can be written as a sum of positive squares in only one way, i.e., 26265625 + 14333796 = 5125^2 + 3786^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40599421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40599721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20299710 + 20299711.

It is an arithmetic number, because the mean of its divisors is an integer number (20299711).

Almost surely, 2^40599421 is an apocalyptic number.

It is an amenable number.

40599421 is a deficient number, since it is larger than the sum of its proper divisors (1).

40599421 is an equidigital number, since it uses as much as digits as its factorization.

40599421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 40599421 is about 6371.7674941887. The cubic root of 40599421 is about 343.6950521097.

The spelling of 40599421 in words is "forty million, five hundred ninety-nine thousand, four hundred twenty-one".