16139951 has 8 divisors (see below), whose sum is σ = 16939104. Its totient is φ = 15348960.

The previous prime is 16139939. The next prime is 16139969. The reversal of 16139951 is 15993161.

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 16139951 - 2⁶ = 16139887 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 (16139971) 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, 2225 + ... + 6101.

It is an arithmetic number, because the mean of its divisors is an integer number (2117388).

Almost surely, 2^16139951 is an apocalyptic number.

16139951 is a deficient number, since it is larger than the sum of its proper divisors (799153).

16139951 is a wasteful number, since it uses less digits than its factorization.

16139951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081.

The product of its digits is 7290, while the sum is 35.

The square root of 16139951 is about 4017.4557869378. The cubic root of 16139951 is about 252.7167749246.

The spelling of 16139951 in words is "sixteen million, one hundred thirty-nine thousand, nine hundred fifty-one".