40440077 has 2 divisors, whose sum is σ = 40440078. Its totient is φ = 40440076.

The previous prime is 40440019. The next prime is 40440079. The reversal of 40440077 is 77004404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33570436 + 6869641 = 5794^2 + 2621^2 .

It is a cyclic number.

It is not a de Polignac number, because 40440077 - 2⁶ = 40440013 is a prime.

Together with 40440079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40440079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20220038 + 20220039.

It is an arithmetic number, because the mean of its divisors is an integer number (20220039).

Almost surely, 2^40440077 is an apocalyptic number.

It is an amenable number.

40440077 is a deficient number, since it is larger than the sum of its proper divisors (1).

40440077 is an equidigital number, since it uses as much as digits as its factorization.

40440077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 40440077 is about 6359.2512924086. The cubic root of 40440077 is about 343.2448195071.

The spelling of 40440077 in words is "forty million, four hundred forty thousand, seventy-seven".