138950949 has 8 divisors (see below), whose sum is σ = 186999840. Its totient is φ = 91768016.

The previous prime is 138950939. The next prime is 138950957. The reversal of 138950949 is 949059831.

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

It is a cyclic number.

It is not a de Polignac number, because 138950949 - 2⁹ = 138950437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138950898 and 138950907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138950939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216114 + ... + 216755.

It is an arithmetic number, because the mean of its divisors is an integer number (23374980).

Almost surely, 2^138950949 is an apocalyptic number.

It is an amenable number.

138950949 is a deficient number, since it is larger than the sum of its proper divisors (48048891).

138950949 is a wasteful number, since it uses less digits than its factorization.

138950949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432979.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 138950949 is about 11787.7457132397. The cubic root of 138950949 is about 517.9492069176.

The spelling of 138950949 in words is "one hundred thirty-eight million, nine hundred fifty thousand, nine hundred forty-nine".