40079449 has 2 divisors, whose sum is σ = 40079450. Its totient is φ = 40079448.

The previous prime is 40079447. The next prime is 40079491. The reversal of 40079449 is 94497004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27878400 + 12201049 = 5280^2 + 3493^2 .

It is a cyclic number.

It is not a de Polignac number, because 40079449 - 2¹ = 40079447 is a prime.

Together with 40079447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40079441) 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, 20039724 + 20039725.

It is an arithmetic number, because the mean of its divisors is an integer number (20039725).

Almost surely, 2^40079449 is an apocalyptic number.

It is an amenable number.

40079449 is a deficient number, since it is larger than the sum of its proper divisors (1).

40079449 is an equidigital number, since it uses as much as digits as its factorization.

40079449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 40079449 is about 6330.8331995086. The cubic root of 40079449 is about 342.2214660542.

It can be divided in two parts, 4007 and 9449, that added together give a square (13456 = 116²).

The spelling of 40079449 in words is "forty million, seventy-nine thousand, four hundred forty-nine".