139738 has 8 divisors (see below), whose sum is σ = 211860. Its totient is φ = 69120.

The previous prime is 139729. The next prime is 139739. The reversal of 139738 is 837931.

It can be written as a sum of positive squares in 2 ways, for example, as 124609 + 15129 = 353^2 + 123^2 .

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

It is not an unprimeable number, because it can be changed into a prime (139739) 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, 103 + ... + 538.

2¹³⁹⁷³⁸ is an apocalyptic number.

139738 is a deficient number, since it is larger than the sum of its proper divisors (72122).

139738 is a wasteful number, since it uses less digits than its factorization.

139738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752.

The product of its digits is 4536, while the sum is 31.

The square root of 139738 is about 373.8154624945. The cubic root of 139738 is about 51.8925295188.

The spelling of 139738 in words is "one hundred thirty-nine thousand, seven hundred thirty-eight".