387227497 has 2 divisors, whose sum is σ = 387227498. Its totient is φ = 387227496.

The previous prime is 387227447. The next prime is 387227507. The reversal of 387227497 is 794722783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372335616 + 14891881 = 19296^2 + 3859^2 .

It is a cyclic number.

It is not a de Polignac number, because 387227497 - 2⁷ = 387227369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 387227497.

It is not a weakly prime, because it can be changed into another prime (387227447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193613748 + 193613749.

It is an arithmetic number, because the mean of its divisors is an integer number (193613749).

Almost surely, 2^387227497 is an apocalyptic number.

It is an amenable number.

387227497 is a deficient number, since it is larger than the sum of its proper divisors (1).

387227497 is an equidigital number, since it uses as much as digits as its factorization.

387227497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 49.

The square root of 387227497 is about 19678.0968846075. The cubic root of 387227497 is about 728.8789303956.

The spelling of 387227497 in words is "three hundred eighty-seven million, two hundred twenty-seven thousand, four hundred ninety-seven".