400203122279 has 2 divisors, whose sum is σ = 400203122280. Its totient is φ = 400203122278.

The previous prime is 400203122257. The next prime is 400203122317. The reversal of 400203122279 is 972221302004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400203122279 - 2³⁶ = 331483645543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400203122219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200101561139 + 200101561140.

It is an arithmetic number, because the mean of its divisors is an integer number (200101561140).

Almost surely, 2^400203122279 is an apocalyptic number.

400203122279 is a deficient number, since it is larger than the sum of its proper divisors (1).

400203122279 is an equidigital number, since it uses as much as digits as its factorization.

400203122279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 400203122279 in words is "four hundred billion, two hundred three million, one hundred twenty-two thousand, two hundred seventy-nine".