139967449 has 8 divisors (see below), whose sum is σ = 145836288. Its totient is φ = 134183280.

The previous prime is 139967447. The next prime is 139967459. The reversal of 139967449 is 944769931.

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 139967449 - 2¹ = 139967447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139967396 and 139967405.

It is not an unprimeable number, because it can be changed into a prime (139967447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17782 + ... + 24415.

It is an arithmetic number, because the mean of its divisors is an integer number (18229536).

Almost surely, 2^139967449 is an apocalyptic number.

It is an amenable number.

139967449 is a deficient number, since it is larger than the sum of its proper divisors (5868839).

139967449 is a wasteful number, since it uses less digits than its factorization.

139967449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42335.

The product of its digits is 1469664, while the sum is 52.

The square root of 139967449 is about 11830.7839554275. The cubic root of 139967449 is about 519.2091640002.

The spelling of 139967449 in words is "one hundred thirty-nine million, nine hundred sixty-seven thousand, four hundred forty-nine".