40784141 has 2 divisors, whose sum is σ = 40784142. Its totient is φ = 40784140.

The previous prime is 40784123. The next prime is 40784147. The reversal of 40784141 is 14148704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38316100 + 2468041 = 6190^2 + 1571^2 .

It is a cyclic number.

It is not a de Polignac number, because 40784141 - 2²² = 36589837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40784147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20392070 + 20392071.

It is an arithmetic number, because the mean of its divisors is an integer number (20392071).

Almost surely, 2^40784141 is an apocalyptic number.

It is an amenable number.

40784141 is a deficient number, since it is larger than the sum of its proper divisors (1).

40784141 is an equidigital number, since it uses as much as digits as its factorization.

40784141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 40784141 is about 6386.2462370316. The cubic root of 40784141 is about 344.2155136155.

It can be divided in two parts, 407 and 84141, that added together give a palindrome (84548).

The spelling of 40784141 in words is "forty million, seven hundred eighty-four thousand, one hundred forty-one".