138898411 has 2 divisors, whose sum is σ = 138898412. Its totient is φ = 138898410.

The previous prime is 138898393. The next prime is 138898537. The reversal of 138898411 is 114898831.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138898411 - 2¹¹ = 138896363 is a prime.

It is not a weakly prime, because it can be changed into another prime (138818411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69449205 + 69449206.

It is an arithmetic number, because the mean of its divisors is an integer number (69449206).

Almost surely, 2^138898411 is an apocalyptic number.

138898411 is a deficient number, since it is larger than the sum of its proper divisors (1).

138898411 is an equidigital number, since it uses as much as digits as its factorization.

138898411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 43.

The square root of 138898411 is about 11785.5170018120. The cubic root of 138898411 is about 517.8839190205.

It can be divided in two parts, 1388 and 98411, that added together give a palindrome (99799).

The spelling of 138898411 in words is "one hundred thirty-eight million, eight hundred ninety-eight thousand, four hundred eleven".