397849824439 has 2 divisors, whose sum is σ = 397849824440. Its totient is φ = 397849824438.

The previous prime is 397849824397. The next prime is 397849824481. The reversal of 397849824439 is 934428948793.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (397849824397) and next prime (397849824481).

It is a cyclic number.

It is not a de Polignac number, because 397849824439 - 2¹⁵ = 397849791671 is a prime.

It is a super-2 number, since 2×397849824439² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397849804439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198924912219 + 198924912220.

It is an arithmetic number, because the mean of its divisors is an integer number (198924912220).

Almost surely, 2^397849824439 is an apocalyptic number.

397849824439 is a deficient number, since it is larger than the sum of its proper divisors (1).

397849824439 is an equidigital number, since it uses as much as digits as its factorization.

397849824439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376233984, while the sum is 70.

The spelling of 397849824439 in words is "three hundred ninety-seven billion, eight hundred forty-nine million, eight hundred twenty-four thousand, four hundred thirty-nine".