385943497 has 2 divisors, whose sum is σ = 385943498. Its totient is φ = 385943496.

The previous prime is 385943491. The next prime is 385943501. The reversal of 385943497 is 794349583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 321879481 + 64064016 = 17941^2 + 8004^2 .

It is a cyclic number.

It is not a de Polignac number, because 385943497 - 2²⁷ = 251725769 is a prime.

It is not a weakly prime, because it can be changed into another prime (385943491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192971748 + 192971749.

It is an arithmetic number, because the mean of its divisors is an integer number (192971749).

Almost surely, 2^385943497 is an apocalyptic number.

It is an amenable number.

385943497 is a deficient number, since it is larger than the sum of its proper divisors (1).

385943497 is an equidigital number, since it uses as much as digits as its factorization.

385943497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 52.

The square root of 385943497 is about 19645.4446882732. Note that the first 3 decimals coincide. The cubic root of 385943497 is about 728.0724132222.

The spelling of 385943497 in words is "three hundred eighty-five million, nine hundred forty-three thousand, four hundred ninety-seven".