16139461 has 8 divisors (see below), whose sum is σ = 17428320. Its totient is φ = 14857392.

The previous prime is 16139449. The next prime is 16139479. The reversal of 16139461 is 16493161.

16139461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16139461 - 2⁹ = 16138949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16139411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3966 + ... + 6928.

It is an arithmetic number, because the mean of its divisors is an integer number (2178540).

Almost surely, 2^16139461 is an apocalyptic number.

It is an amenable number.

16139461 is a deficient number, since it is larger than the sum of its proper divisors (1288859).

16139461 is a wasteful number, since it uses less digits than its factorization.

16139461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3395.

The product of its digits is 3888, while the sum is 31.

The square root of 16139461 is about 4017.3948026053. The cubic root of 16139461 is about 252.7142174514.

The spelling of 16139461 in words is "sixteen million, one hundred thirty-nine thousand, four hundred sixty-one".