400034001427 has 2 divisors, whose sum is σ = 400034001428. Its totient is φ = 400034001426.

The previous prime is 400034001397. The next prime is 400034001439. The reversal of 400034001427 is 724100430004.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400034001427 is a prime.

It is not a weakly prime, because it can be changed into another prime (400034001457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200017000713 + 200017000714.

It is an arithmetic number, because the mean of its divisors is an integer number (200017000714).

Almost surely, 2^400034001427 is an apocalyptic number.

400034001427 is a deficient number, since it is larger than the sum of its proper divisors (1).

400034001427 is an equidigital number, since it uses as much as digits as its factorization.

400034001427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 25.

The spelling of 400034001427 in words is "four hundred billion, thirty-four million, one thousand, four hundred twenty-seven".