400422361 has 4 divisors (see below), whose sum is σ = 406986724. Its totient is φ = 393858000.

The previous prime is 400422353. The next prime is 400422391. The reversal of 400422361 is 163224004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63920025 + 336502336 = 7995^2 + 18344^2 .

It is a cyclic number.

It is not a de Polignac number, because 400422361 - 2³ = 400422353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400422391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3282090 + ... + 3282211.

It is an arithmetic number, because the mean of its divisors is an integer number (101746681).

Almost surely, 2^400422361 is an apocalyptic number.

It is an amenable number.

400422361 is a deficient number, since it is larger than the sum of its proper divisors (6564363).

400422361 is an equidigital number, since it uses as much as digits as its factorization.

400422361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6564362.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 400422361 is about 20010.5562391454. The cubic root of 400422361 is about 737.0655403765.

Adding to 400422361 its reverse (163224004), we get a palindrome (563646365).

The spelling of 400422361 in words is "four hundred million, four hundred twenty-two thousand, three hundred sixty-one".