400003471 has 8 divisors (see below), whose sum is σ = 457465760. Its totient is φ = 342620928.

The previous prime is 400003453. The next prime is 400003493. The reversal of 400003471 is 174300004.

It is a happy number.

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 400003471 - 2¹⁹ = 399479183 is a prime.

It is a super-3 number, since 3×400003471³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400003441) 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, 8766 + ... + 29611.

It is an arithmetic number, because the mean of its divisors is an integer number (57183220).

Almost surely, 2^400003471 is an apocalyptic number.

400003471 is a deficient number, since it is larger than the sum of its proper divisors (57462289).

400003471 is a wasteful number, since it uses less digits than its factorization.

400003471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39873.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 400003471 is about 20000.0867748118. The cubic root of 400003471 is about 736.8084309341.

Adding to 400003471 its reverse (174300004), we get a palindrome (574303475).

The spelling of 400003471 in words is "four hundred million, three thousand, four hundred seventy-one".