138990411 has 48 divisors (see below), whose sum is σ = 242674080. Its totient is φ = 79361856.

The previous prime is 138990407. The next prime is 138990413. The reversal of 138990411 is 114099831.

It is not a de Polignac number, because 138990411 - 2² = 138990407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138990413) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 106515 + ... + 107811.

It is an arithmetic number, because the mean of its divisors is an integer number (5055710).

Almost surely, 2^138990411 is an apocalyptic number.

138990411 is a deficient number, since it is larger than the sum of its proper divisors (103683669).

138990411 is an frugal number, since it uses more digits than its factorization.

138990411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332 (or 1307 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 138990411 is about 11789.4194513555. The cubic root of 138990411 is about 517.9982347152.

The spelling of 138990411 in words is "one hundred thirty-eight million, nine hundred ninety thousand, four hundred eleven".