400087841 has 8 divisors (see below), whose sum is σ = 405044640. Its totient is φ = 395141472.

The previous prime is 400087823. The next prime is 400087847. The reversal of 400087841 is 148780004.

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 400087841 - 2⁶ = 400087777 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400087798 and 400087807.

It is not an unprimeable number, because it can be changed into a prime (400087847) 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, 97946 + ... + 101948.

It is an arithmetic number, because the mean of its divisors is an integer number (50630580).

Almost surely, 2^400087841 is an apocalyptic number.

It is an amenable number.

400087841 is a deficient number, since it is larger than the sum of its proper divisors (4956799).

400087841 is a wasteful number, since it uses less digits than its factorization.

400087841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5215.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 400087841 is about 20002.1959044501. The cubic root of 400087841 is about 736.8602306156.

The spelling of 400087841 in words is "four hundred million, eighty-seven thousand, eight hundred forty-one".