40499761 has 2 divisors, whose sum is σ = 40499762. Its totient is φ = 40499760.

The previous prime is 40499741. The next prime is 40499813. The reversal of 40499761 is 16799404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38192400 + 2307361 = 6180^2 + 1519^2 .

It is a cyclic number.

It is not a de Polignac number, because 40499761 - 2¹⁷ = 40368689 is a prime.

It is not a weakly prime, because it can be changed into another prime (40499741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20249880 + 20249881.

It is an arithmetic number, because the mean of its divisors is an integer number (20249881).

Almost surely, 2^40499761 is an apocalyptic number.

It is an amenable number.

40499761 is a deficient number, since it is larger than the sum of its proper divisors (1).

40499761 is an equidigital number, since it uses as much as digits as its factorization.

40499761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 40499761 is about 6363.9422530378. The cubic root of 40499761 is about 343.4135972419.

The spelling of 40499761 in words is "forty million, four hundred ninety-nine thousand, seven hundred sixty-one".