400432430029 has 2 divisors, whose sum is σ = 400432430030. Its totient is φ = 400432430028.

The previous prime is 400432429997. The next prime is 400432430089. The reversal of 400432430029 is 920034234004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231844176004 + 168588254025 = 481502^2 + 410595^2 .

It is a cyclic number.

It is not a de Polignac number, because 400432430029 - 2⁵ = 400432429997 is a prime.

It is a super-2 number, since 2×400432430029² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400432430089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200216215014 + 200216215015.

It is an arithmetic number, because the mean of its divisors is an integer number (200216215015).

Almost surely, 2^400432430029 is an apocalyptic number.

It is an amenable number.

400432430029 is a deficient number, since it is larger than the sum of its proper divisors (1).

400432430029 is an equidigital number, since it uses as much as digits as its factorization.

400432430029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 31.

The spelling of 400432430029 in words is "four hundred billion, four hundred thirty-two million, four hundred thirty thousand, twenty-nine".