400135322 has 8 divisors (see below), whose sum is σ = 600993972. Its totient is φ = 199804000.

The previous prime is 400135291. The next prime is 400135349. The reversal of 400135322 is 223531004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 370986121 + 29149201 = 19261^2 + 5399^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 400135294 and 400135303.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129929 + ... + 132972.

Almost surely, 2^400135322 is an apocalyptic number.

400135322 is a deficient number, since it is larger than the sum of its proper divisors (200858650).

400135322 is a wasteful number, since it uses less digits than its factorization.

400135322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263664.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 400135322 is about 20003.3827639227. The cubic root of 400135322 is about 736.8893787785.

Adding to 400135322 its reverse (223531004), we get a palindrome (623666326).

The spelling of 400135322 in words is "four hundred million, one hundred thirty-five thousand, three hundred twenty-two".