400100471 has 4 divisors (see below), whose sum is σ = 400170072. Its totient is φ = 400030872.

The previous prime is 400100453. The next prime is 400100473. The reversal of 400100471 is 174001004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400100471 - 2²² = 395906167 is a prime.

It is a super-3 number, since 3×400100471³ (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 (400100473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25316 + ... + 37961.

It is an arithmetic number, because the mean of its divisors is an integer number (100042518).

Almost surely, 2^400100471 is an apocalyptic number.

400100471 is a deficient number, since it is larger than the sum of its proper divisors (69601).

400100471 is an equidigital number, since it uses as much as digits as its factorization.

400100471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69600.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 400100471 is about 20002.5116172945. The cubic root of 400100471 is about 736.8679842852.

Adding to 400100471 its reverse (174001004), we get a palindrome (574101475).

The spelling of 400100471 in words is "four hundred million, one hundred thousand, four hundred seventy-one".