139484999 has 4 divisors (see below), whose sum is σ = 139508664. Its totient is φ = 139461336.

The previous prime is 139484987. The next prime is 139485013. The reversal of 139484999 is 999484931.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139484999 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 (139484929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4844 + ... + 17390.

It is an arithmetic number, because the mean of its divisors is an integer number (34877166).

Almost surely, 2^139484999 is an apocalyptic number.

139484999 is a deficient number, since it is larger than the sum of its proper divisors (23665).

139484999 is a wasteful number, since it uses less digits than its factorization.

139484999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23664.

The product of its digits is 2519424, while the sum is 56.

The square root of 139484999 is about 11810.3767509762. The cubic root of 139484999 is about 518.6119279509.

The spelling of 139484999 in words is "one hundred thirty-nine million, four hundred eighty-four thousand, nine hundred ninety-nine".