402444024413 has 2 divisors, whose sum is σ = 402444024414. Its totient is φ = 402444024412.

The previous prime is 402444024383. The next prime is 402444024427. The reversal of 402444024413 is 314420444204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370883436004 + 31560588409 = 609002^2 + 177653^2 .

It is a cyclic number.

It is not a de Polignac number, because 402444024413 - 2⁶ = 402444024349 is a prime.

It is a super-2 number, since 2×402444024413² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 402444024413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402444024013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201222012206 + 201222012207.

It is an arithmetic number, because the mean of its divisors is an integer number (201222012207).

Almost surely, 2^402444024413 is an apocalyptic number.

It is an amenable number.

402444024413 is a deficient number, since it is larger than the sum of its proper divisors (1).

402444024413 is an equidigital number, since it uses as much as digits as its factorization.

402444024413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 402444024413 its reverse (314420444204), we get a palindrome (716864468617).

The spelling of 402444024413 in words is "four hundred two billion, four hundred forty-four million, twenty-four thousand, four hundred thirteen".