138467973 has 24 divisors (see below), whose sum is σ = 216486912. Its totient is φ = 78490944.

The previous prime is 138467971. The next prime is 138467977. The reversal of 138467973 is 379764831.

It is not a de Polignac number, because 138467973 - 2¹ = 138467971 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138467971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14961 + ... + 22377.

It is an arithmetic number, because the mean of its divisors is an integer number (9020288).

Almost surely, 2^138467973 is an apocalyptic number.

It is an amenable number.

138467973 is a deficient number, since it is larger than the sum of its proper divisors (78018939).

138467973 is a wasteful number, since it uses less digits than its factorization.

138467973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7561 (or 7554 counting only the distinct ones).

The product of its digits is 762048, while the sum is 48.

The square root of 138467973 is about 11767.2415204244. The cubic root of 138467973 is about 517.3484015326.

The spelling of 138467973 in words is "one hundred thirty-eight million, four hundred sixty-seven thousand, nine hundred seventy-three".