129953733 has 36 divisors (see below), whose sum is σ = 218299968. Its totient is φ = 68533920.

The previous prime is 129953699. The next prime is 129953737. The reversal of 129953733 is 337359921.

It is not a de Polignac number, because 129953733 - 2¹⁷ = 129822661 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129953737) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22228 + ... + 27458.

It is an arithmetic number, because the mean of its divisors is an integer number (6063888).

Almost surely, 2^129953733 is an apocalyptic number.

129953733 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

129953733 is a deficient number, since it is larger than the sum of its proper divisors (88346235).

129953733 is a wasteful number, since it uses less digits than its factorization.

129953733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5274 (or 5254 counting only the distinct ones).

The product of its digits is 153090, while the sum is 42.

The square root of 129953733 is about 11399.7251282652. The cubic root of 129953733 is about 506.5195975405.

The spelling of 129953733 in words is "one hundred twenty-nine million, nine hundred fifty-three thousand, seven hundred thirty-three".