400134835829 has 2 divisors, whose sum is σ = 400134835830. Its totient is φ = 400134835828.

The previous prime is 400134835787. The next prime is 400134835861. The reversal of 400134835829 is 928538431004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328271702500 + 71863133329 = 572950^2 + 268073^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400134835829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400134835229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200067417914 + 200067417915.

It is an arithmetic number, because the mean of its divisors is an integer number (200067417915).

Almost surely, 2^400134835829 is an apocalyptic number.

It is an amenable number.

400134835829 is a deficient number, since it is larger than the sum of its proper divisors (1).

400134835829 is an equidigital number, since it uses as much as digits as its factorization.

400134835829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 400134835829 in words is "four hundred billion, one hundred thirty-four million, eight hundred thirty-five thousand, eight hundred twenty-nine".