400671403 has 16 divisors (see below), whose sum is σ = 441787392. Its totient is φ = 360360000.

The previous prime is 400671391. The next prime is 400671407. The reversal of 400671403 is 304176004.

It is a de Polignac number, because none of the positive numbers 2^k-400671403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400671407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 768783 + ... + 769303.

It is an arithmetic number, because the mean of its divisors is an integer number (27611712).

Almost surely, 2^400671403 is an apocalyptic number.

400671403 is a deficient number, since it is larger than the sum of its proper divisors (41115989).

400671403 is a wasteful number, since it uses less digits than its factorization.

400671403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 400671403 is about 20016.7780374365. The cubic root of 400671403 is about 737.2183142575.

The spelling of 400671403 in words is "four hundred million, six hundred seventy-one thousand, four hundred three".