402039040441 has 2 divisors, whose sum is σ = 402039040442. Its totient is φ = 402039040440.

The previous prime is 402039040427. The next prime is 402039040471. The reversal of 402039040441 is 144040930204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 256267800441 + 145771240000 = 506229^2 + 381800^2 .

It is a cyclic number.

It is not a de Polignac number, because 402039040441 - 2¹³ = 402039032249 is a prime.

It is not a weakly prime, because it can be changed into another prime (402039040411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201019520220 + 201019520221.

It is an arithmetic number, because the mean of its divisors is an integer number (201019520221).

Almost surely, 2^402039040441 is an apocalyptic number.

It is an amenable number.

402039040441 is a deficient number, since it is larger than the sum of its proper divisors (1).

402039040441 is an equidigital number, since it uses as much as digits as its factorization.

402039040441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 402039040441 its reverse (144040930204), we get a palindrome (546079970645).

The spelling of 402039040441 in words is "four hundred two billion, thirty-nine million, forty thousand, four hundred forty-one".