19460139 has 16 divisors (see below), whose sum is σ = 27283200. Its totient is φ = 12314016.

The previous prime is 19460101. The next prime is 19460143. The reversal of 19460139 is 93106491.

It is not a de Polignac number, because 19460139 - 2¹¹ = 19458091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19460179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8577 + ... + 10605.

It is an arithmetic number, because the mean of its divisors is an integer number (1705200).

Almost surely, 2^19460139 is an apocalyptic number.

19460139 is a deficient number, since it is larger than the sum of its proper divisors (7823061).

19460139 is a wasteful number, since it uses less digits than its factorization.

19460139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 19460139 is about 4411.3647548123. The cubic root of 19460139 is about 268.9771035822.

The spelling of 19460139 in words is "nineteen million, four hundred sixty thousand, one hundred thirty-nine".