40036457 has 2 divisors, whose sum is σ = 40036458. Its totient is φ = 40036456.

The previous prime is 40036441. The next prime is 40036487. The reversal of 40036457 is 75463004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35952016 + 4084441 = 5996^2 + 2021^2 .

It is a cyclic number.

It is not a de Polignac number, because 40036457 - 2⁴ = 40036441 is a prime.

It is a super-2 number, since 2×40036457² = 3205835778225698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40036417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20018228 + 20018229.

It is an arithmetic number, because the mean of its divisors is an integer number (20018229).

Almost surely, 2^40036457 is an apocalyptic number.

It is an amenable number.

40036457 is a deficient number, since it is larger than the sum of its proper divisors (1).

40036457 is an equidigital number, since it uses as much as digits as its factorization.

40036457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 40036457 is about 6327.4368428298. The cubic root of 40036457 is about 342.0990587738.

The spelling of 40036457 in words is "forty million, thirty-six thousand, four hundred fifty-seven".