40999999 has 2 divisors, whose sum is σ = 41000000. Its totient is φ = 40999998.

The previous prime is 40999993. The next prime is 41000017. The reversal of 40999999 is 99999904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40999999 - 2¹¹ = 40997951 is a prime.

40999999 is a modest number, since divided by 9999 gives 4099 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40999993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20499999 + 20500000.

It is an arithmetic number, because the mean of its divisors is an integer number (20500000).

Almost surely, 2^40999999 is an apocalyptic number.

40999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

40999999 is an equidigital number, since it uses as much as digits as its factorization.

40999999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2125764, while the sum is 58.

The square root of 40999999 is about 6403.1241593460. The cubic root of 40999999 is about 344.8217212348.

The spelling of 40999999 in words is "forty million, nine hundred ninety-nine thousand, nine hundred ninety-nine".