40558069 has 2 divisors, whose sum is σ = 40558070. Its totient is φ = 40558068.

The previous prime is 40558057. The next prime is 40558079. The reversal of 40558069 is 96085504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36457444 + 4100625 = 6038^2 + 2025^2 .

It is a cyclic number.

It is not a de Polignac number, because 40558069 - 2¹³ = 40549877 is a prime.

It is a super-2 number, since 2×40558069² = 3289913922017522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40558009) 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, 20279034 + 20279035.

It is an arithmetic number, because the mean of its divisors is an integer number (20279035).

Almost surely, 2^40558069 is an apocalyptic number.

It is an amenable number.

40558069 is a deficient number, since it is larger than the sum of its proper divisors (1).

40558069 is an equidigital number, since it uses as much as digits as its factorization.

40558069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 40558069 is about 6368.5217279994. The cubic root of 40558069 is about 343.5783237961.

The spelling of 40558069 in words is "forty million, five hundred fifty-eight thousand, sixty-nine".