40228949 has 2 divisors, whose sum is σ = 40228950. Its totient is φ = 40228948.

The previous prime is 40228927. The next prime is 40228999. The reversal of 40228949 is 94982204.

40228949 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 can be written as a sum of positive squares in only one way, i.e., 36300625 + 3928324 = 6025^2 + 1982^2 .

It is a cyclic number.

It is not a de Polignac number, because 40228949 - 2¹² = 40224853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40228999) 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, 20114474 + 20114475.

It is an arithmetic number, because the mean of its divisors is an integer number (20114475).

Almost surely, 2^40228949 is an apocalyptic number.

It is an amenable number.

40228949 is a deficient number, since it is larger than the sum of its proper divisors (1).

40228949 is an equidigital number, since it uses as much as digits as its factorization.

40228949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 40228949 is about 6342.6295020283. The cubic root of 40228949 is about 342.6464438490.

The spelling of 40228949 in words is "forty million, two hundred twenty-eight thousand, nine hundred forty-nine".