138948706 has 8 divisors (see below), whose sum is σ = 224455644. Its totient is φ = 64130160.

The previous prime is 138948703. The next prime is 138948721. The reversal of 138948706 is 607849831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 114297481 + 24651225 = 10691^2 + 4965^2 .

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 (138948703) 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, 2672065 + ... + 2672116.

Almost surely, 2^138948706 is an apocalyptic number.

138948706 is a deficient number, since it is larger than the sum of its proper divisors (85506938).

138948706 is a wasteful number, since it uses less digits than its factorization.

138948706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5344196.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 138948706 is about 11787.6505716788. The cubic root of 138948706 is about 517.9464199238.

The spelling of 138948706 in words is "one hundred thirty-eight million, nine hundred forty-eight thousand, seven hundred six".