385426987 has 8 divisors (see below), whose sum is σ = 423942192. Its totient is φ = 350386960.

The previous prime is 385426973. The next prime is 385426997. The reversal of 385426987 is 789624583.

It is not a de Polignac number, because 385426987 - 2¹⁹ = 384902699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385426957) 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, 143458 + ... + 146119.

It is an arithmetic number, because the mean of its divisors is an integer number (52992774).

Almost surely, 2^385426987 is an apocalyptic number.

385426987 is a deficient number, since it is larger than the sum of its proper divisors (38515205).

385426987 is an equidigital number, since it uses as much as digits as its factorization.

385426987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289610 (or 289588 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 52.

The square root of 385426987 is about 19632.2944914750. The cubic root of 385426987 is about 727.7474739764.

The spelling of 385426987 in words is "three hundred eighty-five million, four hundred twenty-six thousand, nine hundred eighty-seven".