139694982 has 40 divisors (see below), whose sum is σ = 325969176. Its totient is φ = 39908736.

The previous prime is 139694977. The next prime is 139694983. The reversal of 139694982 is 289496931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139694983) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9558 + ... + 19254.

Almost surely, 2^139694982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139694982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162984588).

139694982 is an abundant number, since it is smaller than the sum of its proper divisors (186274194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139694982 is an frugal number, since it uses more digits than its factorization.

139694982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9730 (or 9709 counting only the distinct ones).

The product of its digits is 839808, while the sum is 51.

The square root of 139694982 is about 11819.2631750038. The cubic root of 139694982 is about 518.8720397633.

The spelling of 139694982 in words is "one hundred thirty-nine million, six hundred ninety-four thousand, nine hundred eighty-two".