400365741397 has 2 divisors, whose sum is σ = 400365741398. Its totient is φ = 400365741396.

The previous prime is 400365741283. The next prime is 400365741421. The reversal of 400365741397 is 793147563004.

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., 223704404676 + 176661336721 = 472974^2 + 420311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400365741397 is a prime.

It is a super-3 number, since 3×400365741397³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400365741397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400362741397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200182870698 + 200182870699.

It is an arithmetic number, because the mean of its divisors is an integer number (200182870699).

Almost surely, 2^400365741397 is an apocalyptic number.

It is an amenable number.

400365741397 is a deficient number, since it is larger than the sum of its proper divisors (1).

400365741397 is an equidigital number, since it uses as much as digits as its factorization.

400365741397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 49.

The spelling of 400365741397 in words is "four hundred billion, three hundred sixty-five million, seven hundred forty-one thousand, three hundred ninety-seven".