138992714 has 48 divisors (see below), whose sum is σ = 270371520. Its totient is φ = 53101440.

The previous prime is 138992699. The next prime is 138992719. The reversal of 138992714 is 417299831.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (138992719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29459 + ... + 33849.

It is an arithmetic number, because the mean of its divisors is an integer number (5632740).

Almost surely, 2^138992714 is an apocalyptic number.

138992714 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

138992714 is a deficient number, since it is larger than the sum of its proper divisors (131378806).

138992714 is a wasteful number, since it uses less digits than its factorization.

138992714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4443 (or 4436 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The square root of 138992714 is about 11789.5171232752. The cubic root of 138992714 is about 518.0010956880.

The spelling of 138992714 in words is "one hundred thirty-eight million, nine hundred ninety-two thousand, seven hundred fourteen".