16389461 has 4 divisors (see below), whose sum is σ = 17879424. Its totient is φ = 14899500.

The previous prime is 16389431. The next prime is 16389467. The reversal of 16389461 is 16498361.

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.

It is a de Polignac number, because none of the positive numbers 2^k-16389461 is a prime.

It is a super-2 number, since 2×16389461² = 537228863741042, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16389467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744965 + ... + 744986.

It is an arithmetic number, because the mean of its divisors is an integer number (4469856).

Almost surely, 2^16389461 is an apocalyptic number.

16389461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16389461 is a deficient number, since it is larger than the sum of its proper divisors (1489963).

16389461 is a wasteful number, since it uses less digits than its factorization.

16389461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489962.

The product of its digits is 31104, while the sum is 38.

The square root of 16389461 is about 4048.3899268722. The cubic root of 16389461 is about 254.0123839210.

Subtracting 16389461 from its reverse (16498361), we obtain a square (108900 = 330²).

The spelling of 16389461 in words is "sixteen million, three hundred eighty-nine thousand, four hundred sixty-one".