397804053690739 has 2 divisors, whose sum is σ = 397804053690740. Its totient is φ = 397804053690738.

The previous prime is 397804053690691. The next prime is 397804053690793. The reversal of 397804053690739 is 937096350408793.

Together with next prime (397804053690793) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397804053690739 - 2¹³ = 397804053682547 is a prime.

It is a super-2 number, since 2×397804053690739² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (397804053690539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198902026845369 + 198902026845370.

It is an arithmetic number, because the mean of its divisors is an integer number (198902026845370).

Almost surely, 2^{397804053690739} is an apocalyptic number.

397804053690739 is a deficient number, since it is larger than the sum of its proper divisors (1).

397804053690739 is an equidigital number, since it uses as much as digits as its factorization.

397804053690739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 925888320, while the sum is 73.

The spelling of 397804053690739 in words is "three hundred ninety-seven trillion, eight hundred four billion, fifty-three million, six hundred ninety thousand, seven hundred thirty-nine".