380278789 has 4 divisors (see below), whose sum is σ = 414849600. Its totient is φ = 345707980.

The previous prime is 380278783. The next prime is 380278807. The reversal of 380278789 is 987872083.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 987872083 = 11 ⋅89806553.

It is a cyclic number.

It is not a de Polignac number, because 380278789 - 2⁹ = 380278277 is a prime.

It is a super-2 number, since 2×380278789² = 289223914726613042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380278783) 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, 17285389 + ... + 17285410.

It is an arithmetic number, because the mean of its divisors is an integer number (103712400).

Almost surely, 2^380278789 is an apocalyptic number.

It is an amenable number.

380278789 is a deficient number, since it is larger than the sum of its proper divisors (34570811).

380278789 is a wasteful number, since it uses less digits than its factorization.

380278789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34570810.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The square root of 380278789 is about 19500.7381655157. The cubic root of 380278789 is about 724.4927337053.

The spelling of 380278789 in words is "three hundred eighty million, two hundred seventy-eight thousand, seven hundred eighty-nine".