400350354184709 has 2 divisors, whose sum is σ = 400350354184710. Its totient is φ = 400350354184708.

The previous prime is 400350354184601. The next prime is 400350354184717. The reversal of 400350354184709 is 907481453053004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 297219220562209 + 103131133622500 = 17240047^2 + 10155350^2 .

It is a cyclic number.

It is not a de Polignac number, because 400350354184709 - 2³⁶ = 400281634707973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400350354124709) 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, 200175177092354 + 200175177092355.

It is an arithmetic number, because the mean of its divisors is an integer number (200175177092355).

Almost surely, 2^{400350354184709} is an apocalyptic number.

It is an amenable number.

400350354184709 is a deficient number, since it is larger than the sum of its proper divisors (1).

400350354184709 is an equidigital number, since it uses as much as digits as its factorization.

400350354184709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 400350354184709 in words is "four hundred trillion, three hundred fifty billion, three hundred fifty-four million, one hundred eighty-four thousand, seven hundred nine".