40076081 has 2 divisors, whose sum is σ = 40076082. Its totient is φ = 40076080.

The previous prime is 40076059. The next prime is 40076107. The reversal of 40076081 is 18067004.

It is an a-pointer prime, because the next prime (40076107) can be obtained adding 40076081 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22090000 + 17986081 = 4700^2 + 4241^2 .

It is a cyclic number.

It is not a de Polignac number, because 40076081 - 2¹⁴ = 40059697 is a prime.

It is a super-2 number, since 2×40076081² = 3212184536637122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40076081.

It is not a weakly prime, because it can be changed into another prime (40076011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20038040 + 20038041.

It is an arithmetic number, because the mean of its divisors is an integer number (20038041).

Almost surely, 2^40076081 is an apocalyptic number.

It is an amenable number.

40076081 is a deficient number, since it is larger than the sum of its proper divisors (1).

40076081 is an equidigital number, since it uses as much as digits as its factorization.

40076081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 40076081 is about 6330.5671941778. The cubic root of 40076081 is about 342.2118798098.

The spelling of 40076081 in words is "forty million, seventy-six thousand, eighty-one".