400432241 has 8 divisors (see below), whose sum is σ = 448641984. Its totient is φ = 354190320.

The previous prime is 400432237. The next prime is 400432283. The reversal of 400432241 is 142234004.

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

It is not a de Polignac number, because 400432241 - 2² = 400432237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400432141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491525 + ... + 492338.

It is an arithmetic number, because the mean of its divisors is an integer number (56080248).

Almost surely, 2^400432241 is an apocalyptic number.

It is an amenable number.

400432241 is a deficient number, since it is larger than the sum of its proper divisors (48209743).

400432241 is a wasteful number, since it uses less digits than its factorization.

400432241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983911.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 400432241 is about 20010.8031073218. The cubic root of 400432241 is about 737.0716024319.

Adding to 400432241 its reverse (142234004), we get a palindrome (542666245).

The spelling of 400432241 in words is "four hundred million, four hundred thirty-two thousand, two hundred forty-one".