387289773 has 12 divisors (see below), whose sum is σ = 602450940. Its totient is φ = 238332096.

The previous prime is 387289769. The next prime is 387289807. The reversal of 387289773 is 377982783.

It can be written as a sum of positive squares in 2 ways, for example, as 15069924 + 372219849 = 3882^2 + 19293^2 .

It is not a de Polignac number, because 387289773 - 2² = 387289769 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387289873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1654968 + ... + 1655201.

It is an arithmetic number, because the mean of its divisors is an integer number (50204245).

Almost surely, 2^387289773 is an apocalyptic number.

It is an amenable number.

387289773 is a deficient number, since it is larger than the sum of its proper divisors (215161167).

387289773 is a wasteful number, since it uses less digits than its factorization.

387289773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3310188 (or 3310185 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The square root of 387289773 is about 19679.6791894583. The cubic root of 387289773 is about 728.9180023722.

The spelling of 387289773 in words is "three hundred eighty-seven million, two hundred eighty-nine thousand, seven hundred seventy-three".