16439461 has 2 divisors, whose sum is σ = 16439462. Its totient is φ = 16439460.

The previous prime is 16439447. The next prime is 16439471. The reversal of 16439461 is 16493461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12852225 + 3587236 = 3585^2 + 1894^2 .

It is a cyclic number.

It is not a de Polignac number, because 16439461 - 2⁵ = 16439429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16439431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8219730 + 8219731.

It is an arithmetic number, because the mean of its divisors is an integer number (8219731).

Almost surely, 2^16439461 is an apocalyptic number.

It is an amenable number.

16439461 is a deficient number, since it is larger than the sum of its proper divisors (1).

16439461 is an equidigital number, since it uses as much as digits as its factorization.

16439461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The square root of 16439461 is about 4054.5605187246. The cubic root of 16439461 is about 254.2704303491.

It can be divided in two parts, 16439 and 461, that added together give a square (16900 = 130²).

The spelling of 16439461 in words is "sixteen million, four hundred thirty-nine thousand, four hundred sixty-one".