129469536 has 96 divisors (see below), whose sum is σ = 431585280. Its totient is φ = 36989568.

The previous prime is 129469531. The next prime is 129469559. The reversal of 129469536 is 635964921.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 129469491 and 129469500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129469531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4656 + ... + 16751.

It is an arithmetic number, because the mean of its divisors is an integer number (4495680).

Almost surely, 2^129469536 is an apocalyptic number.

129469536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129469536 is an abundant number, since it is smaller than the sum of its proper divisors (302115744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129469536 is a wasteful number, since it uses less digits than its factorization.

129469536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21433 (or 21419 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 129469536 is about 11378.4680866978. The cubic root of 129469536 is about 505.8897310582.

The spelling of 129469536 in words is "one hundred twenty-nine million, four hundred sixty-nine thousand, five hundred thirty-six".