397054739 has 2 divisors, whose sum is σ = 397054740. Its totient is φ = 397054738.

The previous prime is 397054729. The next prime is 397054759. The reversal of 397054739 is 937450793.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (937450793) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397054739 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 397054693 and 397054702.

It is not a weakly prime, because it can be changed into another prime (397054729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198527369 + 198527370.

It is an arithmetic number, because the mean of its divisors is an integer number (198527370).

Almost surely, 2^397054739 is an apocalyptic number.

397054739 is a deficient number, since it is larger than the sum of its proper divisors (1).

397054739 is an equidigital number, since it uses as much as digits as its factorization.

397054739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 714420, while the sum is 47.

The square root of 397054739 is about 19926.2324336539. The cubic root of 397054739 is about 734.9934372438.

It can be divided in two parts, 397054 and 739, that added together give a palindrome (397793).

The spelling of 397054739 in words is "three hundred ninety-seven million, fifty-four thousand, seven hundred thirty-nine".