400867734791 has 2 divisors, whose sum is σ = 400867734792. Its totient is φ = 400867734790.

The previous prime is 400867734769. The next prime is 400867734797. The reversal of 400867734791 is 197437768004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400867734791 - 2⁶ = 400867734727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400867734797) 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, 200433867395 + 200433867396.

It is an arithmetic number, because the mean of its divisors is an integer number (200433867396).

Almost surely, 2^400867734791 is an apocalyptic number.

400867734791 is a deficient number, since it is larger than the sum of its proper divisors (1).

400867734791 is an equidigital number, since it uses as much as digits as its factorization.

400867734791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7112448, while the sum is 56.

The spelling of 400867734791 in words is "four hundred billion, eight hundred sixty-seven million, seven hundred thirty-four thousand, seven hundred ninety-one".