138705974 has 8 divisors (see below), whose sum is σ = 226973448. Its totient is φ = 63048160.

The previous prime is 138705961. The next prime is 138705979. The reversal of 138705974 is 479507831.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138705979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3152387 + ... + 3152430.

It is an arithmetic number, because the mean of its divisors is an integer number (28371681).

Almost surely, 2^138705974 is an apocalyptic number.

138705974 is a deficient number, since it is larger than the sum of its proper divisors (88267474).

138705974 is a wasteful number, since it uses less digits than its factorization.

138705974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6304830.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 138705974 is about 11777.3500414991. The cubic root of 138705974 is about 517.6446408142.

The spelling of 138705974 in words is "one hundred thirty-eight million, seven hundred five thousand, nine hundred seventy-four".