13919049 has 24 divisors (see below), whose sum is σ = 20940192. Its totient is φ = 8902080.

The previous prime is 13919047. The next prime is 13919051. The reversal of 13919049 is 94091931.

It is an interprime number because it is at equal distance from previous prime (13919047) and next prime (13919051).

It is not a de Polignac number, because 13919049 - 2¹ = 13919047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13919047) 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 23 ways as a sum of consecutive naturals, for example, 24442 + ... + 25004.

It is an arithmetic number, because the mean of its divisors is an integer number (872508).

Almost surely, 2^13919049 is an apocalyptic number.

It is an amenable number.

13919049 is a deficient number, since it is larger than the sum of its proper divisors (7021143).

13919049 is a wasteful number, since it uses less digits than its factorization.

13919049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677 (or 674 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 13919049 is about 3730.8241716811. The cubic root of 13919049 is about 240.5487962214.

It can be divided in two parts, 1391 and 9049, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 13919049 in words is "thirteen million, nine hundred nineteen thousand, forty-nine".