378269389 has 4 divisors (see below), whose sum is σ = 388492924. Its totient is φ = 368045856.

The previous prime is 378269387. The next prime is 378269399. The reversal of 378269389 is 983962873.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 983962873 = 17 ⋅57880169.

It can be written as a sum of positive squares in 2 ways, for example, as 304223364 + 74046025 = 17442^2 + 8605^2 .

It is a cyclic number.

It is not a de Polignac number, because 378269389 - 2¹ = 378269387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378269387) 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, 5111712 + ... + 5111785.

It is an arithmetic number, because the mean of its divisors is an integer number (97123231).

Almost surely, 2^378269389 is an apocalyptic number.

It is an amenable number.

378269389 is a deficient number, since it is larger than the sum of its proper divisors (10223535).

378269389 is a wasteful number, since it uses less digits than its factorization.

378269389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10223534.

The product of its digits is 3919104, while the sum is 55.

The square root of 378269389 is about 19449.1487988549. The cubic root of 378269389 is about 723.2144019082.

The spelling of 378269389 in words is "three hundred seventy-eight million, two hundred sixty-nine thousand, three hundred eighty-nine".