400230641 has 2 divisors, whose sum is σ = 400230642. Its totient is φ = 400230640.

The previous prime is 400230619. The next prime is 400230647. The reversal of 400230641 is 146032004.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399840016 + 390625 = 19996^2 + 625^2 .

It is a cyclic number.

It is not a de Polignac number, because 400230641 - 2²² = 396036337 is a prime.

It is not a weakly prime, because it can be changed into another prime (400230647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200115320 + 200115321.

It is an arithmetic number, because the mean of its divisors is an integer number (200115321).

Almost surely, 2^400230641 is an apocalyptic number.

It is an amenable number.

400230641 is a deficient number, since it is larger than the sum of its proper divisors (1).

400230641 is an equidigital number, since it uses as much as digits as its factorization.

400230641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 400230641 is about 20005.7651940634. The cubic root of 400230641 is about 736.9478873031.

Adding to 400230641 its reverse (146032004), we get a palindrome (546262645).

It can be divided in two parts, 4002 and 30641, that added together give a palindrome (34643).

The spelling of 400230641 in words is "four hundred million, two hundred thirty thousand, six hundred forty-one".