385099397 has 2 divisors, whose sum is σ = 385099398. Its totient is φ = 385099396.

The previous prime is 385099331. The next prime is 385099411. The reversal of 385099397 is 793990583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239197156 + 145902241 = 15466^2 + 12079^2 .

It is a cyclic number.

It is not a de Polignac number, because 385099397 - 2²⁸ = 116663941 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385099307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192549698 + 192549699.

It is an arithmetic number, because the mean of its divisors is an integer number (192549699).

Almost surely, 2^385099397 is an apocalyptic number.

It is an amenable number.

385099397 is a deficient number, since it is larger than the sum of its proper divisors (1).

385099397 is an equidigital number, since it uses as much as digits as its factorization.

385099397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1837080, while the sum is 53.

The square root of 385099397 is about 19623.9495769837. The cubic root of 385099397 is about 727.5412348549.

The spelling of 385099397 in words is "three hundred eighty-five million, ninety-nine thousand, three hundred ninety-seven".