401640003 has 6 divisors (see below), whose sum is σ = 580146684. Its totient is φ = 267759996.

The previous prime is 401639983. The next prime is 401640047. The reversal of 401640003 is 300046104.

It is not a de Polignac number, because 401640003 - 2⁸ = 401639747 is a prime.

It is a super-2 number, since 2×401640003² = 322629384019680018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401640073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22313325 + ... + 22313342.

It is an arithmetic number, because the mean of its divisors is an integer number (96691114).

Almost surely, 2^401640003 is an apocalyptic number.

401640003 is a deficient number, since it is larger than the sum of its proper divisors (178506681).

401640003 is a wasteful number, since it uses less digits than its factorization.

401640003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44626673 (or 44626670 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 401640003 is about 20040.9581357778. The cubic root of 401640003 is about 737.8118971104.

Adding to 401640003 its reverse (300046104), we get a palindrome (701686107).

The spelling of 401640003 in words is "four hundred one million, six hundred forty thousand, three".