16379389 has 4 divisors (see below), whose sum is σ = 17639356. Its totient is φ = 15119424.

The previous prime is 16379383. The next prime is 16379393. The reversal of 16379389 is 98397361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98397361 = 5479 ⋅17959.

It can be written as a sum of positive squares in 2 ways, for example, as 9180900 + 7198489 = 3030^2 + 2683^2 .

It is a cyclic number.

It is not a de Polignac number, because 16379389 - 2⁵ = 16379357 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 (16379383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629964 + ... + 629989.

It is an arithmetic number, because the mean of its divisors is an integer number (4409839).

Almost surely, 2^16379389 is an apocalyptic number.

It is an amenable number.

16379389 is a deficient number, since it is larger than the sum of its proper divisors (1259967).

16379389 is a wasteful number, since it uses less digits than its factorization.

16379389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259966.

The product of its digits is 244944, while the sum is 46.

The square root of 16379389 is about 4047.1457843769. The cubic root of 16379389 is about 253.9603395616.

It can be divided in two parts, 1637 and 9389, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 16379389 in words is "sixteen million, three hundred seventy-nine thousand, three hundred eighty-nine".