387624139 has 8 divisors (see below), whose sum is σ = 451357920. Its totient is φ = 325980096.

The previous prime is 387624137. The next prime is 387624143. The reversal of 387624139 is 931426783.

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

It is a cyclic number.

It is not a de Polignac number, because 387624139 - 2¹ = 387624137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 387624095 and 387624104.

It is not an unprimeable number, because it can be changed into a prime (387624131) 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, 522034 + ... + 522775.

It is an arithmetic number, because the mean of its divisors is an integer number (56419740).

Almost surely, 2^387624139 is an apocalyptic number.

387624139 is a deficient number, since it is larger than the sum of its proper divisors (63733781).

387624139 is a wasteful number, since it uses less digits than its factorization.

387624139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044869.

The product of its digits is 217728, while the sum is 43.

The square root of 387624139 is about 19688.1725662896. The cubic root of 387624139 is about 729.1277120929.

The spelling of 387624139 in words is "three hundred eighty-seven million, six hundred twenty-four thousand, one hundred thirty-nine".