387505494 has 48 divisors (see below), whose sum is σ = 892972080. Its totient is φ = 121098240.

The previous prime is 387505493. The next prime is 387505537. The reversal of 387505494 is 494505783.

387505494 is a `hidden beast` number, since 38 + 75 + 0 + 549 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387505493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27334 + ... + 39014.

It is an arithmetic number, because the mean of its divisors is an integer number (18603585).

Almost surely, 2^387505494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 387505494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446486040).

387505494 is an abundant number, since it is smaller than the sum of its proper divisors (505466586).

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

387505494 is a wasteful number, since it uses less digits than its factorization.

387505494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11805 (or 11802 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 387505494 is about 19685.1592322744. The cubic root of 387505494 is about 729.0533134024.

It can be divided in two parts, 38750 and 5494, that added together give a palindrome (44244).

The spelling of 387505494 in words is "three hundred eighty-seven million, five hundred five thousand, four hundred ninety-four".