387899428 has 12 divisors (see below), whose sum is σ = 775798912. Its totient is φ = 166242600.

The previous prime is 387899419. The next prime is 387899441. The reversal of 387899428 is 824998783.

387899428 is an admirable number.

It is an unprimeable number.

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, 6926748 + ... + 6926803.

Almost surely, 2^387899428 is an apocalyptic number.

It is an amenable number.

387899428 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.

387899428 is a wasteful number, since it uses less digits than its factorization.

387899428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13853562 (or 13853560 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 58.

The square root of 387899428 is about 19695.1625532769. The cubic root of 387899428 is about 729.3002790379.

The spelling of 387899428 in words is "three hundred eighty-seven million, eight hundred ninety-nine thousand, four hundred twenty-eight".