387133985 has 8 divisors (see below), whose sum is σ = 530926656. Its totient is φ = 265463280.

The previous prime is 387133969. The next prime is 387133993. The reversal of 387133985 is 589331783.

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

It is not a de Polignac number, because 387133985 - 2⁴ = 387133969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5530451 + ... + 5530520.

It is an arithmetic number, because the mean of its divisors is an integer number (66365832).

Almost surely, 2^387133985 is an apocalyptic number.

387133985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

387133985 is a deficient number, since it is larger than the sum of its proper divisors (143792671).

387133985 is a wasteful number, since it uses less digits than its factorization.

387133985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11060983.

The product of its digits is 544320, while the sum is 47.

The square root of 387133985 is about 19675.7206983632. The cubic root of 387133985 is about 728.8202530768.

The spelling of 387133985 in words is "three hundred eighty-seven million, one hundred thirty-three thousand, nine hundred eighty-five".