387449440 has 48 divisors (see below), whose sum is σ = 1046116512. Its totient is φ = 132839424.

The previous prime is 387449437. The next prime is 387449449. The reversal of 387449440 is 44944783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387449449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171849 + ... + 174088.

It is an arithmetic number, because the mean of its divisors is an integer number (21794094).

Almost surely, 2^387449440 is an apocalyptic number.

It is an amenable number.

387449440 is an abundant number, since it is smaller than the sum of its proper divisors (658667072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

387449440 is a wasteful number, since it uses less digits than its factorization.

387449440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345959 (or 345951 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 43.

The square root of 387449440 is about 19683.7354178520. The cubic root of 387449440 is about 729.0181583524.

It can be divided in two parts, 38744 and 9440, that added together give a palindrome (48184).

The spelling of 387449440 in words is "three hundred eighty-seven million, four hundred forty-nine thousand, four hundred forty".