40100549 has 2 divisors, whose sum is σ = 40100550. Its totient is φ = 40100548.

The previous prime is 40100539. The next prime is 40100551. The reversal of 40100549 is 94500104.

It is a happy number.

40100549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37149025 + 2951524 = 6095^2 + 1718^2 .

It is a cyclic number.

It is not a de Polignac number, because 40100549 - 2¹² = 40096453 is a prime.

Together with 40100551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40100539) 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, 20050274 + 20050275.

It is an arithmetic number, because the mean of its divisors is an integer number (20050275).

Almost surely, 2^40100549 is an apocalyptic number.

It is an amenable number.

40100549 is a deficient number, since it is larger than the sum of its proper divisors (1).

40100549 is an equidigital number, since it uses as much as digits as its factorization.

40100549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 40100549 is about 6332.4994275562. The cubic root of 40100549 is about 342.2815101777.

The spelling of 40100549 in words is "forty million, one hundred thousand, five hundred forty-nine".