139984794 has 16 divisors (see below), whose sum is σ = 311077440. Its totient is φ = 46661580.

The previous prime is 139984751. The next prime is 139984829. The reversal of 139984794 is 497489931.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 2592311 = 139984794 / (1 + 3 + 9 + 9 + 8 + 4 + 7 + 9 + 4).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 139984794.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1296102 + ... + 1296209.

It is an arithmetic number, because the mean of its divisors is an integer number (19442340).

Almost surely, 2^139984794 is an apocalyptic number.

139984794 is an abundant number, since it is smaller than the sum of its proper divisors (171092646).

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

139984794 is a wasteful number, since it uses less digits than its factorization.

139984794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592322 (or 2592316 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 139984794 is about 11831.5169779703. The cubic root of 139984794 is about 519.2306102032.

The spelling of 139984794 in words is "one hundred thirty-nine million, nine hundred eighty-four thousand, seven hundred ninety-four".