16481439 has 12 divisors (see below), whose sum is σ = 25637976. Its totient is φ = 10142352.

The previous prime is 16481401. The next prime is 16481441. The reversal of 16481439 is 93418461.

16481439 is a `hidden beast` number, since 1 + 648 + 1 + 4 + 3 + 9 = 666.

It is not a de Polignac number, because 16481439 - 2¹⁵ = 16448671 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16481489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70317 + ... + 70550.

It is an arithmetic number, because the mean of its divisors is an integer number (2136498).

Almost surely, 2^16481439 is an apocalyptic number.

16481439 is a deficient number, since it is larger than the sum of its proper divisors (9156537).

16481439 is a wasteful number, since it uses less digits than its factorization.

16481439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140886 (or 140883 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 16481439 is about 4059.7338582720. The cubic root of 16481439 is about 254.4866720672.

The spelling of 16481439 in words is "sixteen million, four hundred eighty-one thousand, four hundred thirty-nine".