400334420135 has 16 divisors (see below), whose sum is σ = 517384267680. Its totient is φ = 295614990720.

The previous prime is 400334420131. The next prime is 400334420137. The reversal of 400334420135 is 531024433004.

It is not a de Polignac number, because 400334420135 - 2² = 400334420131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400334420098 and 400334420107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400334420131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1062545 + ... + 1389125.

It is an arithmetic number, because the mean of its divisors is an integer number (32336516730).

Almost surely, 2^400334420135 is an apocalyptic number.

400334420135 is a deficient number, since it is larger than the sum of its proper divisors (117049847545).

400334420135 is a wasteful number, since it uses less digits than its factorization.

400334420135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345458.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 400334420135 its reverse (531024433004), we get a palindrome (931358853139).

The spelling of 400334420135 in words is "four hundred billion, three hundred thirty-four million, four hundred twenty thousand, one hundred thirty-five".