139347982 has 8 divisors (see below), whose sum is σ = 209389752. Its totient is φ = 69551400.

The previous prime is 139347931. The next prime is 139347991. The reversal of 139347982 is 289743931.

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

It is a congruent number.

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, 59869 + ... + 62152.

It is an arithmetic number, because the mean of its divisors is an integer number (26173719).

Almost surely, 2^139347982 is an apocalyptic number.

139347982 is a deficient number, since it is larger than the sum of its proper divisors (70041770).

139347982 is a wasteful number, since it uses less digits than its factorization.

139347982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122594.

The product of its digits is 326592, while the sum is 46.

The square root of 139347982 is about 11804.5746217303. The cubic root of 139347982 is about 518.4420603884.

The spelling of 139347982 in words is "one hundred thirty-nine million, three hundred forty-seven thousand, nine hundred eighty-two".