40223977 has 2 divisors, whose sum is σ = 40223978. Its totient is φ = 40223976.

The previous prime is 40223951. The next prime is 40224011. The reversal of 40223977 is 77932204.

40223977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (40224011) can be obtained adding 40223977 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21353641 + 18870336 = 4621^2 + 4344^2 .

It is a cyclic number.

It is not a de Polignac number, because 40223977 - 2²³ = 31835369 is a prime.

It is not a weakly prime, because it can be changed into another prime (40223917) 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, 20111988 + 20111989.

It is an arithmetic number, because the mean of its divisors is an integer number (20111989).

Almost surely, 2^40223977 is an apocalyptic number.

It is an amenable number.

40223977 is a deficient number, since it is larger than the sum of its proper divisors (1).

40223977 is an equidigital number, since it uses as much as digits as its factorization.

40223977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 40223977 is about 6342.2375389132. The cubic root of 40223977 is about 342.6323270803.

The spelling of 40223977 in words is "forty million, two hundred twenty-three thousand, nine hundred seventy-seven".