139979914 has 8 divisors (see below), whose sum is σ = 210887460. Its totient is φ = 69684096.

The previous prime is 139979899. The next prime is 139979947. The reversal of 139979914 is 419979931.

139979914 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 105370225 + 34609689 = 10265^2 + 5883^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152359 + ... + 153274.

Almost surely, 2^139979914 is an apocalyptic number.

139979914 is a deficient number, since it is larger than the sum of its proper divisors (70907546).

139979914 is a wasteful number, since it uses less digits than its factorization.

139979914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305864.

The product of its digits is 551124, while the sum is 52.

The square root of 139979914 is about 11831.3107473348. The cubic root of 139979914 is about 519.2245765125.

The spelling of 139979914 in words is "one hundred thirty-nine million, nine hundred seventy-nine thousand, nine hundred fourteen".