400140533 has 8 divisors (see below), whose sum is σ = 442567608. Its totient is φ = 359377344.

The previous prime is 400140527. The next prime is 400140539. The reversal of 400140533 is 335041004.

It is an interprime number because it is at equal distance from previous prime (400140527) and next prime (400140539).

It can be written as a sum of positive squares in 4 ways, for example, as 106977649 + 293162884 = 10343^2 + 17122^2 .

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 400140533 - 2⁸ = 400140277 is a prime.

It is a super-2 number, since 2×400140533² = 320224892299048178, 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 (400140539) 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, 415466 + ... + 416427.

It is an arithmetic number, because the mean of its divisors is an integer number (55320951).

Almost surely, 2^400140533 is an apocalyptic number.

It is an amenable number.

400140533 is a deficient number, since it is larger than the sum of its proper divisors (42427075).

400140533 is a wasteful number, since it uses less digits than its factorization.

400140533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831943.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 400140533 is about 20003.5130164679. The cubic root of 400140533 is about 736.8925776246.

Adding to 400140533 its reverse (335041004), we get a palindrome (735181537).

The spelling of 400140533 in words is "four hundred million, one hundred forty thousand, five hundred thirty-three".