129483649 has 4 divisors (see below), whose sum is σ = 130629636. Its totient is φ = 128337664.

The previous prime is 129483619. The next prime is 129483661. The reversal of 129483649 is 946384921.

129483649 = T₁₄₅₇ + T₁₄₅₈ + ... + T₁₅₆₉.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 946384921 = 73 ⋅12964177.

It can be written as a sum of positive squares in 2 ways, for example, as 20657025 + 108826624 = 4545^2 + 10432^2 .

It is a cyclic number.

It is not a de Polignac number, because 129483649 - 2¹¹ = 129481601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129483599 and 129483608.

It is not an unprimeable number, because it can be changed into a prime (129483619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572824 + ... + 573049.

It is an arithmetic number, because the mean of its divisors is an integer number (32657409).

Almost surely, 2^129483649 is an apocalyptic number.

It is an amenable number.

129483649 is a deficient number, since it is larger than the sum of its proper divisors (1145987).

129483649 is a wasteful number, since it uses less digits than its factorization.

129483649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145986.

The product of its digits is 373248, while the sum is 46.

The square root of 129483649 is about 11379.0882323673. The cubic root of 129483649 is about 505.9081121193.

The spelling of 129483649 in words is "one hundred twenty-nine million, four hundred eighty-three thousand, six hundred forty-nine".