40120477 has 2 divisors, whose sum is σ = 40120478. Its totient is φ = 40120476.

The previous prime is 40120463. The next prime is 40120499. The reversal of 40120477 is 77402104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29713401 + 10407076 = 5451^2 + 3226^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40120477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40120777) 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, 20060238 + 20060239.

It is an arithmetic number, because the mean of its divisors is an integer number (20060239).

Almost surely, 2^40120477 is an apocalyptic number.

It is an amenable number.

40120477 is a deficient number, since it is larger than the sum of its proper divisors (1).

40120477 is an equidigital number, since it uses as much as digits as its factorization.

40120477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 40120477 is about 6334.0727024561. The cubic root of 40120477 is about 342.3381998118.

The spelling of 40120477 in words is "forty million, one hundred twenty thousand, four hundred seventy-seven".