400114681 has 2 divisors, whose sum is σ = 400114682. Its totient is φ = 400114680.

The previous prime is 400114571. The next prime is 400114691. The reversal of 400114681 is 186411004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 384787456 + 15327225 = 19616^2 + 3915^2 .

It is a cyclic number.

It is not a de Polignac number, because 400114681 - 2¹⁷ = 399983609 is a prime.

It is a super-2 number, since 2×400114681² = 320183515903463522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (400114691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200057340 + 200057341.

It is an arithmetic number, because the mean of its divisors is an integer number (200057341).

Almost surely, 2^400114681 is an apocalyptic number.

It is an amenable number.

400114681 is a deficient number, since it is larger than the sum of its proper divisors (1).

400114681 is an equidigital number, since it uses as much as digits as its factorization.

400114681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 400114681 is about 20002.8668195336. The cubic root of 400114681 is about 736.8767077358.

Adding to 400114681 its reverse (186411004), we get a palindrome (586525685).

The spelling of 400114681 in words is "four hundred million, one hundred fourteen thousand, six hundred eighty-one".