40244137 has 2 divisors, whose sum is σ = 40244138. Its totient is φ = 40244136.

The previous prime is 40244081. The next prime is 40244177. The reversal of 40244137 is 73144204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25644096 + 14600041 = 5064^2 + 3821^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40244137 is a prime.

It is not a weakly prime, because it can be changed into another prime (40244177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20122068 + 20122069.

It is an arithmetic number, because the mean of its divisors is an integer number (20122069).

Almost surely, 2^40244137 is an apocalyptic number.

It is an amenable number.

40244137 is a deficient number, since it is larger than the sum of its proper divisors (1).

40244137 is an equidigital number, since it uses as much as digits as its factorization.

40244137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 40244137 is about 6343.8266842656. The cubic root of 40244137 is about 342.6895592302.

The spelling of 40244137 in words is "forty million, two hundred forty-four thousand, one hundred thirty-seven".