306090939397 has 2 divisors, whose sum is σ = 306090939398. Its totient is φ = 306090939396.

The previous prime is 306090939389. The next prime is 306090939403. The reversal of 306090939397 is 793939090603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204743580196 + 101347359201 = 452486^2 + 318351^2 .

It is an emirp because it is prime and its reverse (793939090603) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 306090939397 - 2³ = 306090939389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (306090939337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153045469698 + 153045469699.

It is an arithmetic number, because the mean of its divisors is an integer number (153045469699).

Almost surely, 2^306090939397 is an apocalyptic number.

It is an amenable number.

306090939397 is a deficient number, since it is larger than the sum of its proper divisors (1).

306090939397 is an equidigital number, since it uses as much as digits as its factorization.

306090939397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7440174, while the sum is 58.

The spelling of 306090939397 in words is "three hundred six billion, ninety million, nine hundred thirty-nine thousand, three hundred ninety-seven".