387455473 has 2 divisors, whose sum is σ = 387455474. Its totient is φ = 387455472.

The previous prime is 387455461. The next prime is 387455491. The reversal of 387455473 is 374554783.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212343184 + 175112289 = 14572^2 + 13233^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387455473 is a prime.

It is not a weakly prime, because it can be changed into another prime (387450473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193727736 + 193727737.

It is an arithmetic number, because the mean of its divisors is an integer number (193727737).

Almost surely, 2^387455473 is an apocalyptic number.

It is an amenable number.

387455473 is a deficient number, since it is larger than the sum of its proper divisors (1).

387455473 is an equidigital number, since it uses as much as digits as its factorization.

387455473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1411200, while the sum is 46.

The square root of 387455473 is about 19683.8886656067. Note that the first 3 decimals coincide. The cubic root of 387455473 is about 729.0219421956.

The spelling of 387455473 in words is "three hundred eighty-seven million, four hundred fifty-five thousand, four hundred seventy-three".