139148994 has 16 divisors (see below), whose sum is σ = 278553600. Its totient is φ = 46340400.

The previous prime is 139148993. The next prime is 139149001. The reversal of 139148994 is 499841931.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139148993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3169 + ... + 16980.

It is an arithmetic number, because the mean of its divisors is an integer number (17409600).

Almost surely, 2^139148994 is an apocalyptic number.

139148994 is an abundant number, since it is smaller than the sum of its proper divisors (139404606).

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

139148994 is a wasteful number, since it uses less digits than its factorization.

139148994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21305.

The product of its digits is 279936, while the sum is 48.

The square root of 139148994 is about 11796.1431832612. The cubic root of 139148994 is about 518.1951655478.

The spelling of 139148994 in words is "one hundred thirty-nine million, one hundred forty-eight thousand, nine hundred ninety-four".