387491946 has 8 divisors (see below), whose sum is σ = 774983904. Its totient is φ = 129163980.

The previous prime is 387491941. The next prime is 387491953. The reversal of 387491946 is 649194783.

It is a sphenic number, since it is the product of 3 distinct primes.

387491946 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (387491941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32290990 + ... + 32291001.

It is an arithmetic number, because the mean of its divisors is an integer number (96872988).

Almost surely, 2^387491946 is an apocalyptic number.

387491946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

387491946 is a wasteful number, since it uses less digits than its factorization.

387491946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64581996.

The product of its digits is 1306368, while the sum is 51.

The square root of 387491946 is about 19684.8151121620. The cubic root of 387491946 is about 729.0448168954.

The spelling of 387491946 in words is "three hundred eighty-seven million, four hundred ninety-one thousand, nine hundred forty-six".