83129049 has 12 divisors (see below), whose sum is σ = 121198896. Its totient is φ = 54900792.

The previous prime is 83129023. The next prime is 83129071. The reversal of 83129049 is 94092138.

It is not a de Polignac number, because 83129049 - 2⁷ = 83128921 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (83129149) 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, 42199 + ... + 44124.

It is an arithmetic number, because the mean of its divisors is an integer number (10099908).

Almost surely, 2^83129049 is an apocalyptic number.

It is an amenable number.

83129049 is a deficient number, since it is larger than the sum of its proper divisors (38069847).

83129049 is a wasteful number, since it uses less digits than its factorization.

83129049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86436 (or 86433 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 83129049 is about 9117.5133123018. The cubic root of 83129049 is about 436.4330227139.

The spelling of 83129049 in words is "eighty-three million, one hundred twenty-nine thousand, forty-nine".