400340210029 has 2 divisors, whose sum is σ = 400340210030. Its totient is φ = 400340210028.

The previous prime is 400340209961. The next prime is 400340210111. The reversal of 400340210029 is 920012043004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212051040100 + 188289169929 = 460490^2 + 433923^2 .

It is a cyclic number.

It is not a de Polignac number, because 400340210029 - 2³⁷ = 262901256557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400340209985 and 400340210012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400340217029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200170105014 + 200170105015.

It is an arithmetic number, because the mean of its divisors is an integer number (200170105015).

Almost surely, 2^400340210029 is an apocalyptic number.

It is an amenable number.

400340210029 is a deficient number, since it is larger than the sum of its proper divisors (1).

400340210029 is an equidigital number, since it uses as much as digits as its factorization.

400340210029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 400340210029 in words is "four hundred billion, three hundred forty million, two hundred ten thousand, twenty-nine".