139074854 has 4 divisors (see below), whose sum is σ = 208612284. Its totient is φ = 69537426.

The previous prime is 139074853. The next prime is 139074877. The reversal of 139074854 is 458470931.

139074854 = 5895² + 5896² + ... + 5898².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 458470931 = 19 ⋅24130049.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139074853) 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 as a sum of consecutive naturals, namely, 34768712 + ... + 34768715.

It is an arithmetic number, because the mean of its divisors is an integer number (52153071).

Almost surely, 2^139074854 is an apocalyptic number.

139074854 is a deficient number, since it is larger than the sum of its proper divisors (69537430).

139074854 is an equidigital number, since it uses as much as digits as its factorization.

139074854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69537429.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 139074854 is about 11793.0002119902. Note that the first 3 decimals coincide. The cubic root of 139074854 is about 518.1031159784.

The spelling of 139074854 in words is "one hundred thirty-nine million, seventy-four thousand, eight hundred fifty-four".