400071440149 has 2 divisors, whose sum is σ = 400071440150. Its totient is φ = 400071440148.

The previous prime is 400071440009. The next prime is 400071440161. The reversal of 400071440149 is 941044170004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350428480900 + 49642959249 = 591970^2 + 222807^2 .

It is a cyclic number.

It is not a de Polignac number, because 400071440149 - 2¹⁵ = 400071407381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400071440449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200035720074 + 200035720075.

It is an arithmetic number, because the mean of its divisors is an integer number (200035720075).

Almost surely, 2^400071440149 is an apocalyptic number.

It is an amenable number.

400071440149 is a deficient number, since it is larger than the sum of its proper divisors (1).

400071440149 is an equidigital number, since it uses as much as digits as its factorization.

400071440149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 400071440149 in words is "four hundred billion, seventy-one million, four hundred forty thousand, one hundred forty-nine".