40256477 has 2 divisors, whose sum is σ = 40256478. Its totient is φ = 40256476.

The previous prime is 40256429. The next prime is 40256501. The reversal of 40256477 is 77465204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24344356 + 15912121 = 4934^2 + 3989^2 .

It is a cyclic number.

It is not a de Polignac number, because 40256477 - 2⁶ = 40256413 is a prime.

It is equal to p_2448269 and since 40256477 and 2448269 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40256677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20128238 + 20128239.

It is an arithmetic number, because the mean of its divisors is an integer number (20128239).

Almost surely, 2^40256477 is an apocalyptic number.

It is an amenable number.

40256477 is a deficient number, since it is larger than the sum of its proper divisors (1).

40256477 is an equidigital number, since it uses as much as digits as its factorization.

40256477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 40256477 is about 6344.7992088009. The cubic root of 40256477 is about 342.7245817811.

The spelling of 40256477 in words is "forty million, two hundred fifty-six thousand, four hundred seventy-seven".