40279069549 has 2 divisors, whose sum is σ = 40279069550. Its totient is φ = 40279069548.

The previous prime is 40279069507. The next prime is 40279069553. The reversal of 40279069549 is 94596097204.

40279069549 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., 32643455625 + 7635613924 = 180675^2 + 87382^2 .

It is a cyclic number.

It is not a de Polignac number, because 40279069549 - 2⁷ = 40279069421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40279069549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40279069049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20139534774 + 20139534775.

It is an arithmetic number, because the mean of its divisors is an integer number (20139534775).

Almost surely, 2^40279069549 is an apocalyptic number.

It is an amenable number.

40279069549 is a deficient number, since it is larger than the sum of its proper divisors (1).

40279069549 is an equidigital number, since it uses as much as digits as its factorization.

40279069549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 40279069549 in words is "forty billion, two hundred seventy-nine million, sixty-nine thousand, five hundred forty-nine".