400306527641 has 4 divisors (see below), whose sum is σ = 400423819812. Its totient is φ = 400189235472.

The previous prime is 400306527623. The next prime is 400306527653. The reversal of 400306527641 is 146725603004.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 387137817616 + 13168710025 = 622204^2 + 114755^2 .

It is a cyclic number.

It is not a de Polignac number, because 400306527641 - 2²² = 400302333337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 400306527595 and 400306527604.

It is not an unprimeable number, because it can be changed into a prime (400306527671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58640966 + ... + 58647791.

It is an arithmetic number, because the mean of its divisors is an integer number (100105954953).

Almost surely, 2^400306527641 is an apocalyptic number.

It is an amenable number.

400306527641 is a deficient number, since it is larger than the sum of its proper divisors (117292171).

400306527641 is a wasteful number, since it uses less digits than its factorization.

400306527641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117292170.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 400306527641 in words is "four hundred billion, three hundred six million, five hundred twenty-seven thousand, six hundred forty-one".