40534913 has 2 divisors, whose sum is σ = 40534914. Its totient is φ = 40534912.

The previous prime is 40534909. The next prime is 40534957. The reversal of 40534913 is 31943504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37552384 + 2982529 = 6128^2 + 1727^2 .

It is a cyclic number.

It is not a de Polignac number, because 40534913 - 2² = 40534909 is a prime.

It is not a weakly prime, because it can be changed into another prime (40534973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20267456 + 20267457.

It is an arithmetic number, because the mean of its divisors is an integer number (20267457).

Almost surely, 2^40534913 is an apocalyptic number.

It is an amenable number.

40534913 is a deficient number, since it is larger than the sum of its proper divisors (1).

40534913 is an equidigital number, since it uses as much as digits as its factorization.

40534913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 40534913 is about 6366.7034641170. The cubic root of 40534913 is about 343.5129244445.

The spelling of 40534913 in words is "forty million, five hundred thirty-four thousand, nine hundred thirteen".