400442441 has 8 divisors (see below), whose sum is σ = 457975104. Its totient is φ = 342991440.

The previous prime is 400442431. The next prime is 400442447. The reversal of 400442441 is 144244004.

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

It is a cyclic number.

It is not a de Polignac number, because 400442441 - 2²² = 396248137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400442447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9515 + ... + 29856.

It is an arithmetic number, because the mean of its divisors is an integer number (57246888).

Almost surely, 2^400442441 is an apocalyptic number.

It is an amenable number.

400442441 is a deficient number, since it is larger than the sum of its proper divisors (57532663).

400442441 is a wasteful number, since it uses less digits than its factorization.

400442441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40831.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 400442441 is about 20011.0579680336. The cubic root of 400442441 is about 737.0778607246.

Adding to 400442441 its reverse (144244004), we get a palindrome (544686445).

The spelling of 400442441 in words is "four hundred million, four hundred forty-two thousand, four hundred forty-one".