40802977 has 2 divisors, whose sum is σ = 40802978. Its totient is φ = 40802976.

The previous prime is 40802929. The next prime is 40802981. The reversal of 40802977 is 77920804.

It is a happy number.

40802977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39050001 + 1752976 = 6249^2 + 1324^2 .

It is a cyclic number.

It is not a de Polignac number, because 40802977 - 2¹⁵ = 40770209 is a prime.

It is not a weakly prime, because it can be changed into another prime (40802677) 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, 20401488 + 20401489.

It is an arithmetic number, because the mean of its divisors is an integer number (20401489).

Almost surely, 2^40802977 is an apocalyptic number.

It is an amenable number.

40802977 is a deficient number, since it is larger than the sum of its proper divisors (1).

40802977 is an equidigital number, since it uses as much as digits as its factorization.

40802977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 40802977 is about 6387.7207985321. The cubic root of 40802977 is about 344.2684970004.

The spelling of 40802977 in words is "forty million, eight hundred two thousand, nine hundred seventy-seven".