40044293 has 2 divisors, whose sum is σ = 40044294. Its totient is φ = 40044292.

The previous prime is 40044283. The next prime is 40044307. The reversal of 40044293 is 39244004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35976004 + 4068289 = 5998^2 + 2017^2 .

It is a cyclic number.

It is not a de Polignac number, because 40044293 - 2¹² = 40040197 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40044233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20022146 + 20022147.

It is an arithmetic number, because the mean of its divisors is an integer number (20022147).

Almost surely, 2^40044293 is an apocalyptic number.

It is an amenable number.

40044293 is a deficient number, since it is larger than the sum of its proper divisors (1).

40044293 is an equidigital number, since it uses as much as digits as its factorization.

40044293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 40044293 is about 6328.0560206117. The cubic root of 40044293 is about 342.1213760446.

Adding to 40044293 its reverse (39244004), we get a palindrome (79288297).

The spelling of 40044293 in words is "forty million, forty-four thousand, two hundred ninety-three".