138454929 has 12 divisors (see below), whose sum is σ = 200099536. Its totient is φ = 92252952.

The previous prime is 138454913. The next prime is 138454951. The reversal of 138454929 is 929454831.

138454929 is a `hidden beast` number, since 1 + 3 + 84 + 549 + 29 = 666.

It is not a de Polignac number, because 138454929 - 2⁴ = 138454913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138454429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21522 + ... + 27204.

Almost surely, 2^138454929 is an apocalyptic number.

It is an amenable number.

138454929 is a deficient number, since it is larger than the sum of its proper divisors (61644607).

138454929 is a wasteful number, since it uses less digits than its factorization.

138454929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8396 (or 8393 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 138454929 is about 11766.6872568281. The cubic root of 138454929 is about 517.3321558879.

The spelling of 138454929 in words is "one hundred thirty-eight million, four hundred fifty-four thousand, nine hundred twenty-nine".