387473627909 has 2 divisors, whose sum is σ = 387473627910. Its totient is φ = 387473627908.

The previous prime is 387473627873. The next prime is 387473627969. The reversal of 387473627909 is 909726374783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230798572225 + 156675055684 = 480415^2 + 395822^2 .

It is a cyclic number.

It is not a de Polignac number, because 387473627909 - 2¹⁶ = 387473562373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387473627969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193736813954 + 193736813955.

It is an arithmetic number, because the mean of its divisors is an integer number (193736813955).

Almost surely, 2^387473627909 is an apocalyptic number.

It is an amenable number.

387473627909 is a deficient number, since it is larger than the sum of its proper divisors (1).

387473627909 is an equidigital number, since it uses as much as digits as its factorization.

387473627909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96018048, while the sum is 65.

The spelling of 387473627909 in words is "three hundred eighty-seven billion, four hundred seventy-three million, six hundred twenty-seven thousand, nine hundred nine".