387426319 has 4 divisors (see below), whose sum is σ = 442772944. Its totient is φ = 332079696.

The previous prime is 387426301. The next prime is 387426323. The reversal of 387426319 is 913624783.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 387426319 - 2⁹ = 387425807 is a prime.

It is a super-2 number, since 2×387426319² = 300198305307779522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387427319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27673302 + ... + 27673315.

It is an arithmetic number, because the mean of its divisors is an integer number (110693236).

Almost surely, 2^387426319 is an apocalyptic number.

387426319 is a deficient number, since it is larger than the sum of its proper divisors (55346625).

387426319 is an equidigital number, since it uses as much as digits as its factorization.

387426319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55346624.

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

The square root of 387426319 is about 19683.1480967857. The cubic root of 387426319 is about 729.0036567062.

The spelling of 387426319 in words is "three hundred eighty-seven million, four hundred twenty-six thousand, three hundred nineteen".