40291403 has 2 divisors, whose sum is σ = 40291404. Its totient is φ = 40291402.

The previous prime is 40291399. The next prime is 40291421. The reversal of 40291403 is 30419204.

40291403 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 40291403 - 2² = 40291399 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (40291703) 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, 20145701 + 20145702.

It is an arithmetic number, because the mean of its divisors is an integer number (20145702).

Almost surely, 2^40291403 is an apocalyptic number.

40291403 is a deficient number, since it is larger than the sum of its proper divisors (1).

40291403 is an equidigital number, since it uses as much as digits as its factorization.

40291403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 40291403 is about 6347.5509450496. The cubic root of 40291403 is about 342.8236676064.

The spelling of 40291403 in words is "forty million, two hundred ninety-one thousand, four hundred three".