40749287 has 2 divisors, whose sum is σ = 40749288. Its totient is φ = 40749286.

The previous prime is 40749259. The next prime is 40749299. The reversal of 40749287 is 78294704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40749287 - 2¹⁰ = 40748263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40749587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20374643 + 20374644.

It is an arithmetic number, because the mean of its divisors is an integer number (20374644).

Almost surely, 2^40749287 is an apocalyptic number.

40749287 is a deficient number, since it is larger than the sum of its proper divisors (1).

40749287 is an equidigital number, since it uses as much as digits as its factorization.

40749287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 40749287 is about 6383.5168206875. The cubic root of 40749287 is about 344.1174305007.

It can be divided in two parts, 407 and 49287, that added together give a palindrome (49694).

The spelling of 40749287 in words is "forty million, seven hundred forty-nine thousand, two hundred eighty-seven".