138227049 has 9 divisors (see below), whose sum is σ = 199712253. Its totient is φ = 92127852.

The previous prime is 138227009. The next prime is 138227053. The reversal of 138227049 is 940722831.

The square root of 138227049 is 11757.

It is a perfect power (a square), and thus also a powerful number.

138227049 is a `hidden beast` number, since 1 + 382 + 270 + 4 + 9 = 666.

138227049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 138227049 - 2²³ = 129838441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138227009) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 33312 + ... + 37230.

Almost surely, 2^138227049 is an apocalyptic number.

138227049 is the 11757-th square number.

138227049 is the 5879-th centered octagonal number.

It is an amenable number.

138227049 is a deficient number, since it is larger than the sum of its proper divisors (61485204).

138227049 is an frugal number, since it uses more digits than its factorization.

138227049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7844 (or 3922 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The cubic root of 138227049 is about 517.0481780642.

Multiplying 138227049 by its sum of digits (36), we get a square (4976173764 = 70542²).

The spelling of 138227049 in words is "one hundred thirty-eight million, two hundred twenty-seven thousand, forty-nine".