129089744 has 40 divisors (see below), whose sum is σ = 293576448. Its totient is φ = 53827200.

The previous prime is 129089693. The next prime is 129089747. The reversal of 129089744 is 447980921.

It is a junction number, because it is equal to n+sod(n) for n = 129089695 and 129089704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129089747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11432 + ... + 19719.

Almost surely, 2^129089744 is an apocalyptic number.

129089744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

129089744 is an abundant number, since it is smaller than the sum of its proper divisors (164486704).

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

129089744 is a wasteful number, since it uses less digits than its factorization.

129089744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31203 (or 31197 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 129089744 is about 11361.7667640205. The cubic root of 129089744 is about 505.3945796993.

The spelling of 129089744 in words is "one hundred twenty-nine million, eighty-nine thousand, seven hundred forty-four".