138677404 has 24 divisors (see below), whose sum is σ = 247015440. Its totient is φ = 68107776.

The previous prime is 138677389. The next prime is 138677411. The reversal of 138677404 is 404776831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148812 + ... + 149740.

It is an arithmetic number, because the mean of its divisors is an integer number (10292310).

Almost surely, 2^138677404 is an apocalyptic number.

It is an amenable number.

138677404 is a deficient number, since it is larger than the sum of its proper divisors (108338036).

138677404 is a wasteful number, since it uses less digits than its factorization.

138677404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557 (or 1555 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 138677404 is about 11776.1370576263. The cubic root of 138677404 is about 517.6090977095.

The spelling of 138677404 in words is "one hundred thirty-eight million, six hundred seventy-seven thousand, four hundred four".