40289807 has 2 divisors, whose sum is σ = 40289808. Its totient is φ = 40289806.

The previous prime is 40289803. The next prime is 40289819. The reversal of 40289807 is 70898204.

40289807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40289807 - 2² = 40289803 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40289803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20144903 + 20144904.

It is an arithmetic number, because the mean of its divisors is an integer number (20144904).

Almost surely, 2^40289807 is an apocalyptic number.

40289807 is a deficient number, since it is larger than the sum of its proper divisors (1).

40289807 is an equidigital number, since it uses as much as digits as its factorization.

40289807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 40289807 is about 6347.4252260267. The cubic root of 40289807 is about 342.8191409683.

It can be divided in two parts, 402 and 89807, that added together give a palindrome (90209).

The spelling of 40289807 in words is "forty million, two hundred eighty-nine thousand, eight hundred seven".