401443432 has 16 divisors (see below), whose sum is σ = 810607140. Its totient is φ = 185281536.

The previous prime is 401443429. The next prime is 401443439. The reversal of 401443432 is 234344104.

It can be written as a sum of positive squares in 2 ways, for example, as 398641156 + 2802276 = 19966^2 + 1674^2 .

It is a super-2 number, since 2×401443432² = 322313658191877248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401443397 and 401443406.

It is not an unprimeable number, because it can be changed into a prime (401443439) 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, 1929913 + ... + 1930120.

Almost surely, 2^401443432 is an apocalyptic number.

It is an amenable number.

401443432 is an abundant number, since it is smaller than the sum of its proper divisors (409163708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401443432 is a wasteful number, since it uses less digits than its factorization.

401443432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3860052 (or 3860048 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 401443432 is about 20036.0533039818. The cubic root of 401443432 is about 737.6915106213.

Adding to 401443432 its reverse (234344104), we get a palindrome (635787536).

The spelling of 401443432 in words is "four hundred one million, four hundred forty-three thousand, four hundred thirty-two".