40249399613447 has 2 divisors, whose sum is σ = 40249399613448. Its totient is φ = 40249399613446.

The previous prime is 40249399613393. The next prime is 40249399613453. The reversal of 40249399613447 is 74431699394204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40249399613447 - 2⁸ = 40249399613191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40249399613747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20124699806723 + 20124699806724.

It is an arithmetic number, because the mean of its divisors is an integer number (20124699806724).

Almost surely, 2^{40249399613447} is an apocalyptic number.

40249399613447 is a deficient number, since it is larger than the sum of its proper divisors (1).

40249399613447 is an equidigital number, since it uses as much as digits as its factorization.

40249399613447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141087744, while the sum is 65.

The spelling of 40249399613447 in words is "forty trillion, two hundred forty-nine billion, three hundred ninety-nine million, six hundred thirteen thousand, four hundred forty-seven".