387397 has 2 divisors, whose sum is σ = 387398. Its totient is φ = 387396.

The previous prime is 387371. The next prime is 387403. The reversal of 387397 is 793783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 264196 + 123201 = 514^2 + 351^2 .

It is a cyclic number.

It is not a de Polignac number, because 387397 - 2⁷ = 387269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193698 + 193699.

It is an arithmetic number, because the mean of its divisors is an integer number (193699).

2³⁸⁷³⁹⁷ is an apocalyptic number.

It is an amenable number.

387397 is a deficient number, since it is larger than the sum of its proper divisors (1).

387397 is an equidigital number, since it uses as much as digits as its factorization.

387397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 37.

The square root of 387397 is about 622.4122428102. The cubic root of 387397 is about 72.8985266803.

It can be divided in two parts, 387 and 397, that added together give a square (784 = 28²).

The spelling of 387397 in words is "three hundred eighty-seven thousand, three hundred ninety-seven".