40998403 has 2 divisors, whose sum is σ = 40998404. Its totient is φ = 40998402.

The previous prime is 40998389. The next prime is 40998421. The reversal of 40998403 is 30489904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40998403 - 2¹³ = 40990211 is a prime.

It is not a weakly prime, because it can be changed into another prime (40998103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20499201 + 20499202.

It is an arithmetic number, because the mean of its divisors is an integer number (20499202).

Almost surely, 2^40998403 is an apocalyptic number.

40998403 is a deficient number, since it is larger than the sum of its proper divisors (1).

40998403 is an equidigital number, since it uses as much as digits as its factorization.

40998403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 40998403 is about 6402.9995314696. Note that the first 3 decimals coincide. The cubic root of 40998403 is about 344.8172469046.

The spelling of 40998403 in words is "forty million, nine hundred ninety-eight thousand, four hundred three".