309436795397 has 2 divisors, whose sum is σ = 309436795398. Its totient is φ = 309436795396.

The previous prime is 309436795357. The next prime is 309436795439. The reversal of 309436795397 is 793597634903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168035226241 + 141401569156 = 409921^2 + 376034^2 .

It is a cyclic number.

It is not a de Polignac number, because 309436795397 - 2²⁶ = 309369686533 is a prime.

It is a super-2 number, since 2×309436795397² (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 (309436795357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154718397698 + 154718397699.

It is an arithmetic number, because the mean of its divisors is an integer number (154718397699).

Almost surely, 2^309436795397 is an apocalyptic number.

It is an amenable number.

309436795397 is a deficient number, since it is larger than the sum of its proper divisors (1).

309436795397 is an equidigital number, since it uses as much as digits as its factorization.

309436795397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115736040, while the sum is 65.

The spelling of 309436795397 in words is "three hundred nine billion, four hundred thirty-six million, seven hundred ninety-five thousand, three hundred ninety-seven".