400140271 has 8 divisors (see below), whose sum is σ = 427793184. Its totient is φ = 372944640.

The previous prime is 400140233. The next prime is 400140277. The reversal of 400140271 is 172041004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400140271 - 2²⁷ = 265922543 is a prime.

It is a super-2 number, since 2×400140271² = 320224472951906882, which contains 22 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 (400140277) 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, 112510 + ... + 116011.

It is an arithmetic number, because the mean of its divisors is an integer number (53474148).

Almost surely, 2^400140271 is an apocalyptic number.

400140271 is a deficient number, since it is larger than the sum of its proper divisors (27652913).

400140271 is a wasteful number, since it uses less digits than its factorization.

400140271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228641.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 400140271 is about 20003.5064676171. The cubic root of 400140271 is about 736.8924167928.

Adding to 400140271 its reverse (172041004), we get a palindrome (572181275).

The spelling of 400140271 in words is "four hundred million, one hundred forty thousand, two hundred seventy-one".